Type: WearableApplication Age Group: ChildFunction: Passometer，Sleep Tracker，Answer Call，Dial CallLanguage: EnglishCompatibility: All CompatibleStyle: FashionCase Size: 45.0 (L)*32.0 (w)*13.0 (H) mmCompatible Operating System: Android， iOS - AppleModel: W5 Q50 GPS Tracker WatchBrand: Unbranded/GenericFrequency: GSM 850/900/1800/1900MHzInterface: USB 3.0Features: SIM Card， Alarm， Clock， GPS， Rechargeable BatteryUnit Type: piecePackage Weight: 0.300kg (0.66lb.)Package Size: 10cm x 10cm x 10cm (3.94in x 3.94in x 3.94in)