Function:Passometer,Alarm Clock,Remote Control,Fitness Tracker,Message Reminder,Call ReminderLanguage:Russian,Portuguese,Spanish,English,German,Italian,FrenchCompatibility:All CompatibleType:On WristSystem:NoneROM:450mAhNetwork Mode:NoneGPS:NoMultiple Dials:NoMechanism:NoSIM Card Available:NoWaterproof Grade:Professional WaterproofBand Material:RubberCase Material:AlloyScreen Shape:RoundApplication Age Group:AdultStyle:SportMovement Type:Quartz WatchScreen Size:1.24 inchResolution:NoneBattery Detachable:NoAPP Download Available:YesBand Detachable:NoCPU Model:BMA222EFunction:stopwatchQuartz movement AL35 Movement battery AR626SW BT BT 4.0 Display FSTN / full view Light EL Cold light panel Sound Ceramic buzzing Sensor BMA222E(3D) Battery CR2430 (Japan) Electrical Operating voltage 3.0 V BT current 0.25 mA Step counting current 0.025 mA Sound current 6 mA (Buzzer) Luminous current 12.0 mA Standby current 0.012 mA Buzzer sound 40-50 dB Luminous brightness 5.0 LM RF band 2379-2496 MHz Performs BT distance 8-10m (Open space) Server data Permanently saved Very frequent use About 5 months Normal use About 11 months Energy saving mode About 16 months Waterproof level 5 ATM or IP67 Button life 100K times Material Watch sheath Zinc alloy Watch inner structure ABS+PC Strap Silicone strap Strap buckle 316L Stainless steel Bottom cover 316L Stainless steel Watch case size 48.0 x 50.0 x 13.0 mm Strap standard International standard Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. YJL official store