■Brand: CASIO G-SHOCK ■Product model number: GBD-800-1B/GMD-B800-4 (overseas model) ■Quartz (formula) ■Function: [Common] ・Inorganic glass ・Shockproof structure ( Shock Resist) ・Case/bezel material: Resin ・Resin band ・Mobile link function (function linked via Bluetooth communication with compatible mobile phones) ・Pedometer function ・Step count display range: 0 to 999,999 steps ・Goal achievement rate display (target step count Setting range: 1,000 to 50,000 steps, in 1,000 step increments) - Step count graph (displays the number of steps per hour in 6 levels for 7 hours) - Step indicator display - Power saving function (automatically activates the sensor if there is no movement for a certain period of time)・Dual time (with time swap function with home time) ・Stopwatch (1/100 second (less than 1 hour) / 1 second (more than 1 hour), 24-hour meter, with lap/split, memory for up to 200 measurement data (measurement month, day, hour, minute, lap/split) time), target time notification function, up to 10 target notifications (target time) can be set (set unit: 1 second, maximum set 23 hours 59 minutes 59 seconds)) Timer: Interval that can be set up to 5 times Timer for measurement (set unit: 1 second, maximum set: 60 minutes, measure in 1 second increments, auto repeat, auto start) ・5 time alarms ・Time signal ・Full auto calendar ・12/24 time format display switching ・Operation Sound ON/OFF switching function - LED backlight (with auto light, super illuminator, afterglow function, afterglow time switching (1.5 seconds/3 seconds)) - Lifespan: Approximately 3 years * Normal quartz accuracy when not linked with a smartphone (average monthly difference of ±15 seconds). LED: white [GBD-800-1B] ■Case size (H×W×D): 54.1×48.6×15.5mm ■Mass: 59g [GMD-B800-4] ■Case size (H×W×D): 50.7×45.2× 15.5mm ■Mass: 52g ■Brand exclusive BOX ■Warranty period: 1 year