Name: Ratio iDive Color Deep
Brand: Ratio
Rating: 3.7 (1 reviews)

Ratio iDive Color Deep

The iDive Color line's technical tier, adds normoxic trimix on the same 1.3in display.

Cable sync only (libdivecomputer)

Third-party apps can read it, but only over a USB/serial cable, not wirelessly.

3.7Comparison Score

Released	2018
Max depth rating	220m
Algorithm	Bühlmann ZHL-16B or VPM-B, selectable
Air integration	wireless
Wireless	—
Display	1.3in IPS color, 240x240, >150° viewing angle
Battery	rechargeable
Digital compass	Yes
Gas types	air, nitrox, trimix
Gas switches	3
CCR capable	No

"Gas switches" is how many different mixes this computer can be programmed to switch between mid-dive, mostly relevant for technical/staged-decompression diving. It doesn't tell you which gas types (air, nitrox, trimix) are supported. See Gas types and the product description above for that.

Pros

Adds normoxic trimix on top of the Easy tier's air/nitrox support
Up to 3 wireless transmitters for gas monitoring
Same thin, lightweight watch-style case as the Easy tier

Cons

No single authoritative USD price found, retail listings range roughly $495–$600 depending on color/retailer, with no official US price confirmed
No CCR support, that requires the Tech+ tier
Smaller support network in North America than major dive-computer brands

Diver community sentiment

Mostly positive

Divers on Scubaboard generally describe the iDive Color Deep as an easy-to-operate, feature-rich computer offering strong value, with particular praise for its legitimate sidemount support (tracking both tanks with auto gas-switching detection, versus rival computers limited to fewer transmitters). Common complaints include no vibration alerts, an IPS screen that's hard to read in direct sunlight (especially with the factory screen protector), no Bluetooth (USB-cable-only syncing), a firmware bug preventing scrolling through dive history, and proprietary straps/transmitters that limit compatibility. Some divers flagged niche quirks that Ratio support clarified as benign, and noted hesitancy from limited market adoption and few independent long-term reviews.

Scubaboard: iColor Deep walkthrough and review Scubaboard: iDive Color Tech Computer thread Scubaboard: New Computer Ratio iDive Color

Summarized from public forum discussion (Scubaboard, Reddit, and similar), not a survey we ran ourselves. See the linked threads for the original conversations.

The iDive Color Deep steps up from the Color Easy with normoxic trimix support, aimed at divers moving into early technical diving without giving up the line’s thin watch-style case and color display.