CASCA BLUETOOTH WK BS-150 Sporty Bluetooth Earphone WK BS150 Sporty Bluetooth Stereo Headset White Specifications of WK Design BS-150 Model: BS-150 Size: (L x W x H) 10x10x10 Weight: 0.5 Charging port: micro USB battery: rechargeable lithium polymer battery 3.7v 100mAh output: 5v/1Ah standby time 100 hours talk time/ music play time 3.5 hours charging time 2 hours Warranty period: 3 Months Whats in the box 1X WK Design BS-150 Bluetooth