Wireless Bluetooth 4.1 In-Ear NeckBand Stereo Sports Headphone Earphone Headset   Specifications:   Color: Blue、 Red、 White、 Black Note: Please kindly leave us a PAYPAL NOTE specifying your favorite Color、 otherwise we will send it in Random. Model: BT Use Diatance: 10m Version: V4.1 Chip: 4.1 Battery Capacity: 120mAH Stand-by Time: 180 hours Charging Time: 3 hours Talk Time: 10 hours Noise Reduction: CVC6.0 Power Input: DC 5V\/ 200mA Protocol: HFP、 HSP、 A2DP、 AVRCP、 APTX Battery Voltage: 3.7V-3.9V Skip: Support Voice Prompt: Support Support any mobile phones with bluetooth device、 iPad and desktop computer The desktop computer without bluetooth function can be used by matching with the bluetooth adapter (Not included)   Package Included:   1 x Bluetooth 4.1 Headset 1 x USB Charger Cable 2 x Earbuds 1 x User Manual