Syba OG-AUD23034 Oblanc NC2 Bluetooth V2.0 Stereo Headphone with Built-In Mic, Matte Yellow CSR Bluetooth V2.0, Class 2 Chip Profiles Include A2DP, AVRCP Rechargeable 450mAh Battery (Up to 10 Hours Per Charge) Wireless Signal Range Up to: 10m Driver: 50mm, 32 Neodymium