Casio G-Shock GBD-H1000-4A1JR solar radio wave model. There is a little dirt on the back of the belt, but overall, it is a beautiful product with little signs of use! Operation has been confirmed. We will carefully pack and ship it. 【Product Details】 The GBD-H1000 series, part of G-SHOCK's sports line "G-SQUAD," is equipped with a heart rate monitor and GPS function. In terms of functionality, it features an optical sensor for heart rate measurement, an acceleration sensor for step counting, and compass, altitude/barometric pressure, and temperature sensors. GPS functionality also allows for the measurement of distance traveled, speed, pace, and more. ≪Product Details≫ ■Size Guide■ (Manufacturer's Specification) Case size (H × W × D): 63 × 55 × 20.4 mm Weight: 101g ■Specifications■ ・20-bar water resistance ・Battery: Lithium-ion battery ・Charging method/time: Solar power (solar charging system) ・Mobile link function (functional linkage via Bluetooth communication with compatible mobile phones) ・Compatible with "G-SHOCK MOVE" ・World time: 38 world cities ・Time alarm: 4, with snooze function ・Training function 250313-3-06182-00523-00053