Shiro Dive is one of Japan's most popular dive-focused YouTube channels, known for straightforward, experience-driven reviews of diving gear. When Shiro got his hands on the DIVEVOLK SeaTouch 4 Max PLUS in Dreamy Pink, he put together a comprehensive breakdown of why this underwater smartphone housing has become a staple in his dive kit—and why it stands apart from every other option on the market.
Here's what Shiro found, distilled from his hands-on experience across dozens of dives.
The Core Difference: Full Touchscreen Underwater
Plenty of waterproof phone cases exist. What makes the DIVEVOLK SeaTouch 4 Max fundamentally different is that the touchscreen works underwater. Not just basic taps—full touch and swipe gestures, exactly as you'd use the phone on land.
That means you can:
- Unlock the phone while submerged
- Switch camera settings—modes, exposure, white balance—on the fly
- Run any offline app: compass, notepad, downloaded videos, even manga
- Swipe between apps just as naturally as you would on the surface
As Shiro puts it: the only limitation is that online apps won't work underwater since radio signals don't penetrate water. Everything else is fair game. And once you surface and regain cellular signal, the phone instantly becomes a communication device—useful for calling a dive boat, sending your GPS location, or contacting emergency services if you've drifted from the group.
The Accessory Ecosystem
One of the things Shiro highlights is the depth of DIVEVOLK's accessory lineup. The housing isn't a standalone product—it's the center of a modular system:
- Lenses and filters — including wide-angle and macro lenses
- Clamps and handles — for stable two-handed shooting
- External shutter buttons — for precise, shake-free captures
- Video lights — essential for color restoration at depth
Shiro specifically recommends two accessories as "must-haves" for anyone shooting wide:
- Red filter: Most smartphones lack underwater white balance presets, so images tend to skew blue. A red filter physically corrects this, restoring warm tones without software adjustments.
- Wide-angle lens: Standard phone lenses stretch and distort the edges of wide shots. DIVEVOLK's wide-angle attachment eliminates this distortion, producing clean, undistorted footage across the entire frame.
Universal Compatibility via Adapter Trays
The SeaTouch system uses swappable adapter trays to fit different phone models. The housing body stays the same—you only swap the internal tray when you change phones.
Adapters can be specified when you purchase the housing or ordered separately. This design means:
- No obsolescence — upgrade your phone without buying a new housing
- Multi-phone flexibility — keep an adapter for your daily phone and one for a backup or older model
- Broad compatibility — trays are available for most iPhone and Android models
Shiro notes this is a significant cost advantage over dedicated underwater cameras, which become obsolete with each new generation. With DIVEVOLK, the housing investment carries forward across phone upgrades.
The Instant-Sharing Advantage
For Shiro, one of the biggest practical benefits is what happens after the dive. With a mirrorless camera or action cam, you need to extract memory cards, transfer files to a computer or phone, then share. With DIVEVOLK, the workflow is:
- Surface from the dive
- Open the photos and videos immediately on the phone's full-resolution display
- Edit on the spot if needed
- Share via AirDrop, social media, or messaging—instantly
No file transfers, no card readers, no laptop required. The phone's display also serves as a far better preview screen than any camera's built-in LCD, making it easier to evaluate compositions and exposures between dives.
Common Questions Answered
Shiro addresses the questions he hears most from fellow divers:
Q: Aren't you scared of water damage to your daily phone?
A: Shiro has never experienced a leak, and hasn't heard of anyone in his diving community experiencing one either. The SeaTouch is rated to 60 meters. For extra peace of mind, you can always use an older phone that you've upgraded from.
Q: Can I keep a screen protector on?
A: Yes—Shiro uses his with a glass screen protector attached. Touch responsiveness is slightly reduced but fully functional. Just avoid excessively thick protectors that might prevent the phone from seating properly in the adapter tray.
Q: How's the battery life?
A: With the screen on continuously (which Shiro recommends, since unlocking underwater is tedious), battery consumption is noticeable—but one full dive is not a problem on modern smartphones. This applies equally to GoPros and other action cameras with screens.
Q: Does cellular signal work underwater?
A: No—radio waves don't penetrate water. But as soon as you surface, full connectivity returns. For true underwater communication capabilities, pair the housing with a DIVEVOLK SeaLink wireless transmitter for live streaming and two-way communication.
Why It Works
Shiro's conclusion is practical: the DIVEVOLK SeaTouch 4 Max PLUS eliminates friction at every stage. Before the dive, setup is fast—slide the phone into the adapter, close the housing, mount your accessories. During the dive, full touchscreen control means you can access any camera feature or app. After the dive, your photos and videos are immediately available for review, editing, and sharing.
No other underwater smartphone housing on the market offers this combination of touchscreen functionality, 60-meter depth rating, universal phone compatibility, and a full accessory ecosystem. That's why it's earned a permanent spot in Shiro's dive bag—and why his community keeps asking about it.
Ready to see what your smartphone can do underwater? Explore SeaTouch 4 Max kits, browse the full housing collection, or visit DIVEVOLK Technical Support for setup guides. Have questions? Contact us any time.
Watch the Original Review
- Shiro Dive — DIVEVOLK SeaTouch 4 Max PLUS Review (YouTube, Japanese)
- Shiro Dive — Written Review (shirodive.com)
