POLAR OH1 Black Japanese + (92074855) [Official Product]

Designed in Finland. Country of Origin: China. Set contents: OH1 sensor, armband, USB adapter, swim goggle clip, start guide Weight: Sensor 5g, Armband 12g Height 9.5mm Diameter 29.85mm Suitable size: Arm circumference 17~30cm, easily adjustable with adjuster Power source: Rechargeable 45mAh Lithium Polymer Memory: 4MB, up to 200 hours of training Water resistance 30m Continuous operating time: 12 hours Compatible devices: iPhone 4S or later, Android mobile devices (Android 4.4 or later, Bluetooth 4.0 compatible), other ANT+ compatible devices such as sports watches and gym training equipment 2-year manufacturer's warranty on the OH1 heart rate sensor only (excluding the armband and swim goggle clip; a receipt from a domestic authorized retailer is required)