Model S530 bluetooth version V4.0 EDR bluetooth profiles Hands free / Headset Radio frequency 2.402-2.480GHz Transmission power Class 2 Support A2DP music playback (audio output: 35mW, Play / Pause) Multi-point connections can be connected to two one with two bluetooth devices simultaneously Transmission range 10 m Charging Power AC input 110-240V DC output 5V (charging time / about 2 hours / charging voltage 3.7v) Talk time 2 hours talk time (music playback 1 hours / standby time 120 hours / working current <15mA) Features Intelligent voice prompts prompted the state of equipment / to cable Noise MIC special top silicon Marks Battery type 50mA rechargeable lithium battery Dimensions Diameter length 20MM. Width 15MM. 18mm high Features: 4.0 smart chip, efficient transmission speed Compact, ultra Light Design Stereo bluetooth Headset, Portable and easy to Carry High-fidelity sound quality, Wireless music enjoy Voice report number, low power remind, Connect/disconnect remind, Boot off prompts Allow you to conveniently answer calls while driving Support multi point connection Long battery life, fast charging Support WeChat, QQ voice calls, movie bluetooth V4.0, Superior Compatibility, backwards compatible with prior bluetooth versions. Compatible for Almost All the bluetooth enabled Mobile Phones And Tablet PC, etc. Package Included: 1 x Mini S530 In-ear bluetooth Earphone(Only a single) 1 x USB cable