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