Case size 53.2×50×18.7mm. Case/bezel material Resin (biomass plastic). Resin band (biomass plastic). Impact resistant structure (shock resist). 20 ATM water resistant. Battery life about 5 years. Band wearable size 145-205mm. Timer (set unit 1 second, maximum set 24 hours, measured in 1 second units, auto repeat). Report sound flash function (alarm/time signal/timer interlocking light emission). LED backlight (super illuminator, with afterglow function). Light Color LED: White. Accuracy Average monthly difference ±15 seconds. 12/24 hour display switching. If title has “PreOrder” or “P/O”, it will be released around release date. Please check your country’s voltage before order. Because most of country’s voltage is higher than 100V. Please check your country’s plug. [Menu & Manual Language]. Our item has only Menu & Manual in Japanese Language basically. International Buyers – Please Note.