Although it is unrelated to the functionality, there are scratches on the surface, so it is not suitable for those looking for something like new. Used about twice after purchasing new in 2022. After that, it was stored at home. It starts up normally when switched on. The current price is about 28,000 yen. Includes the instruction manual and all accessories. ☆ From the product description page of the sales site below The i100 is the perfect dive computer for beginner divers. It has a simple one-button navigation, from which you can manage 4 modes and 2 types of gas. Settings and calculated values are retained when the battery is replaced, and safety features such as warning sounds and high-visibility LED warning lights are also included. It is a compact and reasonably priced dive computer with all the features divers need. ● 4 modes [Air / Nitrox / Gauge / Freedive] ● User-replaceable battery (CR2450), retains settings and calculated values when replaced ● One-button navigation for intuitive operation ● Compatible with air and nitrox gas ● Equipped with LED warning light function in addition to warning sound, enhanced safety features ● Users can update the software themselves and change to the latest features and versions (Separate purchase of a dedicated download cable is required) ● Pre-dive function useful for the next dive plan ● Water-sensing activation function allows automatic switching to dive mode ● One button allows you to check the previous dive history (maximum depth and dive time) ● History mode displays total number of dives, maximum depth, total dive time, and minimum water temperature ● Supports up to 100% oxygen ratio ● Optional deep stop function with countdown timer available ● Choice of seawater or freshwater ● Automatic altitude adjustment function for accurate profile acquisition at all times ● Easy to use "diver log" software with Mac, PC, and mobile devices (※USB download cable sold separately), you can save and share photos and videos, manage dive computer settings, You can check logs and profile data, and add locations and records (dive log requires separate purchase at ediverlog.com)