Brand Name: VakindStopwatch and Accessories: Waterproof StopwatchModel Number: 92526Brand: VakindModel No.: 92526Model Number: BT-003Product Size: 103*69*22mmColor: BlackBluetooth Version: 4.0Application platform: Android platform， Apple ios platformWaterproof: YesTransmission Distance: <3 mBattery: 1x CR2032(Not include)Unit Type: piecePackage Weight: 0.245kg (0.54lb.)Package Size: 35cm x 30cm x 25cm (13.78in x 11.81in x 9.84in)