Features: 1. Bluetooth V4.0. 2. Built-in microphone. 3. Built-in rechargeable Li-ion battery. 4. Built-in 14.2mm neodymium driver. 5. Portable, lightweight and sweat-proof design. 6. Multipoint pairing (connect 2 Bluetooth deviceS). 7. Voice command for picking up,rejecting calls. 8. Clear bass resonance,CVC wind noise reduction,superior sound isolation. Specifications: General Specification Brand Zonoki Model B92 Color Black Wearing Type In-ear Product Weight (kg) 24g Dimensions 38*42*12mm Technical Parameters Conectivity Interface 1 x Micro USB port Plug Type 3.5mm Additional Functions NFC, Multipoint connection Battery 150mAh Undetachable, Li-Polymer Charging Time 2 hours Talk Time Up to 5 hours Standby Time Up to 100 hours Frequency Response 20Hz~20KHz Chipset CSR Bluetooth Version 4.0 Bluetooth Protocol HSP,A2DP1.2,AVRCP1.4,HFP1.6 Transmission Range 10m Package Included: 1 x ZONOKI B92 NFC Buletooth Headset 1 x USB cable 1 x Manual