The popular DIVE DEMO SOLIS, known for its tough and light design and solar battery, has completely revamped its LCD display. The numbers are larger and easier to read, and the position of each icon has been optimized. It also supports a dedicated smartphone app. You can transfer log data via Bluetooth. You can upload entry and exit times, as well as depth, water temperature, point information, and photo data. DIVE DEMO SOLIS 4G This top-of-the-line open-circuit dive computer features a full titanium body, solar battery, 4-gas change support, and freediving and gauge modes. I used it for about a year, but I stored it when not diving, so it's in good condition. I also applied a protective screen sticker to the screen.