Xiaomi Yi 4K Action Camera Waterproof Case Kit Review Best Deals Tips

The Xiaomi Yi 4K Action Camera Waterproof Case Kit delivers rugged, reliable protection up to 40 meters underwater, making it ideal for divers, surfers, and adventure vloggers. With crystal-clear 4K video performance and a secure, easy-to-use housing design, this kit ensures your camera stays safe without sacrificing quality—all at a budget-friendly price.

Key Takeaways

• Waterproof up to 40m: Ideal for diving, snorkeling, and extreme water sports.
• Secure fit: Tight seal prevents leaks during high-impact activities.
• Clear audio: Built-in mic delivers quality sound even in waterproof mode.
• Quick-release design: Effortlessly swap mounts without removing the case.
• Anti-fog inserts: Prevents lens condensation in humid or cold conditions.
• Bundle value: Kit includes case, mounts, and accessories for a complete setup.

Why the Xiaomi Yi 4K Action Camera Waterproof Case Kit Might Be Your New Adventure Buddy

Let’s be honest—life’s most unforgettable moments don’t happen in a studio. They happen on mountain trails, under crashing waves, or while chasing a sunset on a dusty road. And if you’re like me, you want to capture those moments without worrying about your gear failing. That’s where the Xiaomi Yi 4K Action Camera Waterproof Case Kit comes in. I’ve tested this setup in rainstorms, shallow dives, and even on a bumpy ATV ride through a forest, and it’s held up surprisingly well. But is it worth your hard-earned cash? Let’s break it down together.

This isn’t just another “buy this because it’s cheap” review. I’ve used GoPros, DJI Osmo Actions, and even older Yi models, so I’m comparing this kit to real-world needs: durability, ease of use, video quality, and value. Whether you’re a weekend hiker, a parent filming your kid’s first swim, or an aspiring vlogger, this review will help you decide if the Xiaomi Yi 4K Waterproof Case Kit fits your adventure style. Spoiler: it’s not perfect, but it’s got some serious perks.

First Impressions: Unboxing & Build Quality

What’s in the Box?

When I first opened the package, I was impressed by how much they packed in. The Xiaomi Yi 4K Action Camera Waterproof Case Kit includes:

• The Yi 4K+ action camera (yes, the camera itself is part of the kit)
• A rugged, transparent waterproof housing rated for 40 meters
• Two adhesive mounts (flat and curved)
• A quick-release frame mount
• A lens cleaning cloth
• A basic instruction manual (in English and Chinese)

No, there’s no extra battery or SD card—so plan to buy those separately. But the core essentials? All there. I appreciated the modular design of the case. You can remove the camera from the housing in seconds, which is a lifesaver when you need to swap batteries or check footage mid-hike.

Build Quality: Tough, But Not Indestructible

The waterproof case is made of polycarbonate and rubber gaskets. It feels solid—no creaking or loose parts. The latch is a twist-and-lock system that’s easy to use with gloves (a win for cold-weather adventurers). I dropped it from waist height onto concrete during a test run, and the case cracked slightly, but the camera inside survived unharmed. The lens cover is replaceable, which is great because I scratched mine after scraping it against a rock.

One nitpick: the case’s buttons (for power, record, etc.) are a bit stiff. You’ll need to press firmly, which can be tricky if you’re wearing thick gloves. But hey, better stiff than accidentally turning it on in your backpack.

Waterproof Performance: Diving, Splashing, and Rainy Hikes

40-Meter Rating: Is It Legit?

The kit is rated for 40 meters (130 feet) underwater. I tested it in a pool (5 meters), a shallow reef (8 meters), and even during a downpour in the Pacific Northwest. Zero leaks. The rubber gaskets create a tight seal, and the pressure-release valve lets you open the case post-dive without fogging. For context, most snorkeling and casual diving is under 15 meters, so this is more than enough for most users.

Pro tip: Before your first dive, do a “dry test.” Submerge the empty case in a bucket for 10 minutes. If no water gets in, you’re good to go. I learned this the hard way with a different camera—learned my lesson!

Real-World Water Tests

Here’s how it handled different scenarios:

• Rainy hike: Shot 2 hours of 4K video in heavy rain. No fogging. Audio was muffled (as expected with a case), but video was crisp.
• Beach waves: Mounted it on a surfboard. The adhesive held, but the lens got salt spray. Wiped it with the included cloth—no issues.
• Pool party: Kids splashed it nonstop. The case stayed dry. One kid even dropped it in the deep end. Retrieved it, dried it, and it worked fine.

The only time I had an issue? When I forgot to fully lock the case. Water seeped in, but the camera’s internal seals kept it safe. Moral: always double-check the latch.

Limitations: When It’s Not Ideal

This case isn’t for deep-sea divers or free divers going beyond 40 meters. The housing can’t handle extreme pressure. Also, cold water (below 40°F/4°C) can stiffen the gaskets, making the latch harder to close. If you’re ice diving, look for a dedicated cold-weather case.

Video & Audio Quality: 4K That Doesn’t Disappoint

4K Resolution: Sharp, But Not Perfect

The Yi 4K+ records up to 4K at 30fps (or 1080p at 120fps for slow-mo). I compared it side-by-side with a GoPro Hero 8:

• Daylight: Colors were vibrant, and details like tree bark or ocean waves looked sharp. Slightly warmer tones than the GoPro, which I actually liked.
• Low light: Noisier than GoPro, but still usable. Avoid 4K in dim settings—stick to 1080p.
• Stabilization: Electronic stabilization (EIS) works well for walking/running, but not for extreme motion (e.g., mountain biking). You’ll see a “crop” in the frame when EIS is active.

One surprise? The Yi’s dynamic range handled backlit scenes better than I expected. Shot a sunset with a silhouette—the sky and foreground were both visible, unlike my old GoPro that overexposed the sun.

Audio: The Weak Link

Audio is muffled when the camera’s in the case (no surprise). But here’s a hack: remove the camera from the case and use an external mic. The Yi 4K+ has a mic port! I used a lavalier mic for a hiking vlog, and the audio was crystal clear. Without a mic, stick to ambient sound or voiceovers in post.

Settings You Should Know

The Yi app (iOS/Android) lets you tweak settings like:

• White balance (auto, sunny, cloudy, etc.)
• ISO (100–800 for best quality)
• Field of view (wide, medium, narrow)

My settings for most trips: 4K/30fps, wide FOV, auto white balance, EIS on. For slow-mo: 1080p/120fps, medium FOV (reduces crop from EIS).

Battery Life & Storage: What to Expect

Battery: 2.5 Hours of 4K—But Plan Ahead

The Yi 4K+ has a 1400mAh battery. In 4K mode, it lasts about 2.5 hours. That’s decent but not amazing. Here’s how I stretched it:

• Carry a spare: The kit doesn’t include one, but the battery is cheap (~$15). I swap it mid-hike.

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• Use lower resolution: 1080p/60fps doubles battery life.
• Turn off Wi-Fi: The Yi’s Wi-Fi drains battery fast. Disable it unless you’re streaming.

One quirk: the battery door is hard to open. Use a coin or fingernail to pry it. Not a dealbreaker, but annoying if you’re in a hurry.

Storage: Don’t Skimp on the SD Card

4K video eats storage. Here’s what I learned:

• 32GB card: Holds ~45 minutes of 4K video.
• 128GB card: Holds ~3 hours. Buy this.

The Yi 4K+ supports cards up to 256GB, but I recommend U3/V30 speed cards (e.g., SanDisk Extreme, Samsung EVO). Slower cards cause dropped frames. Also, format the card in the camera before your first use—it prevents glitches.

Real-World Example: A Weekend Trip

On a 2-day camping trip, I used:

• 2 batteries (swapped at lunch)
• 128GB card (filled 80%)
• Shot in 4K for scenic shots, 1080p for action

Total footage: 1.2 hours. Battery life was perfect for my needs. But if you’re filming a 5-hour event, bring a power bank.

Accessories & Mounting: What Works (and What Doesn’t)

Included Mounts: Good, But Not Great

The flat/curved adhesive mounts are standard. They held up on my helmet and bike, but:

• Adhesive fails in heat: Left one on my car dashboard in summer—it fell off after 3 days. Use a 3M VHB tape for permanent mounts.
• Quick-release frame: Lets you attach the camera without the case. Great for dry use, but bulky.

For better options, I’d recommend:

• Handlebar mount: For bikes/motorcycles (third-party ones are sturdier)
• Chest strap: For hiking (Yi sells one, but it’s pricey)
• Suction cup: For cars/boats (test it before driving!)

Third-Party Accessories: A Hidden Perk

The Yi 4K+ uses a standard GoPro mount, so most GoPro accessories fit. I used my old GoPro head strap, tripod mount, and even a waterproof dive light. Saved me $50+ on new gear. Just check compatibility online first.

DIY Mounting Hack

Need a low-cost helmet mount? Use a zip tie + rubber band to secure the quick-release frame to a vent. It’s not pretty, but it works in a pinch. (I tested it on a skateboard—zero wobble!)

Value for Money: Is It Worth the Price?

The Xiaomi Yi 4K Waterproof Case Kit retails for ~$150 (camera + case + basic mounts). Here’s how it stacks up:

Feature	Yi 4K+ Kit	GoPro Hero 8	DJI Osmo Action
Price	$150	$300	$200
Waterproof (no case)	No	Yes (10m)	Yes (11m)
4K Video	Yes (30fps)	Yes (60fps)	Yes (60fps)
Stabilization	Electronic	Hypersmooth	RockSteady
Accessories	Basic	Extensive	Extensive

For budget-conscious adventurers, the Yi kit wins. You get 4K video, a 40m waterproof case, and GoPro-compatible mounts at half the price of a GoPro. But if you need best-in-class stabilization or native waterproofing, spend more.

Best for:

• Casual travelers who want 4K on a budget
• Snorkelers/light divers (under 40m)
• People who already own GoPro accessories

Skip it if:

• You need 4K/60fps or advanced stabilization
• You film in extreme low light
• You want premium audio without a mic

Final Verdict: A Solid Choice for Real Adventures

After months of testing, I’ve decided the Xiaomi Yi 4K Action Camera Waterproof Case Kit is a hidden gem. It’s not as flashy as a GoPro or as polished as a DJI, but it delivers where it counts: 4K video, rugged waterproofing, and compatibility with affordable accessories. The stiff buttons and mediocre audio are trade-offs, but they’re easy to work around.

My favorite part? The freedom it gives me. I’ve taken it kayaking, skiing, and even to a friend’s messy backyard BBQ—no stress about water, dirt, or drops. And when I edit the footage, I’m always surprised by how much detail the 4K sensor captures, even in tough conditions.

If you’re looking for a budget-friendly way to document your adventures without sacrificing quality, this kit is a smart buy. Just remember: buy extra batteries, a 128GB SD card, and a few third-party mounts. With those, you’ll have a setup that rivals cameras twice the price. Happy filming—and don’t forget to wipe the lens!

Frequently Asked Questions

Is the Xiaomi Yi 4K Action Camera Waterproof Case Kit truly waterproof?

Yes, the included waterproof case is rated for depths up to 40 meters (130 feet), making it ideal for snorkeling, diving, or rainy adventures. The secure locking mechanism ensures no water leaks into the housing.

Can I use the Xiaomi Yi 4K camera without the waterproof case for everyday filming?

Absolutely! The camera itself is splash-resistant but not fully waterproof, so the case is required for submersion. For dry-weather activities, you can remove it for lighter weight and easier access to ports.

Does the Xiaomi Yi 4K Action Camera Waterproof Case Kit affect video quality?

The high-clarity polycarbonate lens of the case preserves 4K video sharpness and color accuracy. However, avoid touching the lens cover while recording to prevent glare or fingerprints.

What accessories come with the Xiaomi Yi 4K Action Camera Waterproof Case Kit?

The kit typically includes a waterproof case, mounts (helmet, bike, etc.), a USB cable, and adhesive pads. Some bundles add extra batteries or a remote control—check listings for exact inclusions.

How long does the battery last when using the waterproof case?

The Xiaomi Yi 4K’s battery lasts 120–150 minutes in 4K mode, but cold water or heavy Wi-Fi use can shorten this. The case doesn’t impact battery life, but keep spare batteries for longer shoots.

Where can I find the best deals on the Xiaomi Yi 4K Action Camera Waterproof Case Kit?

Look for discounts on Amazon, Gearbest, or Xiaomi’s official store during holiday sales. Bundle deals with extra mounts or batteries often offer the best value for the waterproof case kit.