A Blue tooth wireless head phones with Blue tooth protocol standards of Blue tooth V2.1+EDR, Receiver range: 10m / 360*, Carrier frequency: 2402MHz2480MHz, USB Interference: High speed USB 2.0, Battery: Chargeable lithiumion polymer battery (3.7V/320MA/h) Charger power: Computer USB interface DC5vDC5V (500MA), Travel charger, DC 5V (500MA) car charger, Successive working time: about 10 hours, Frequency response: 20Hz 0 KHz K. S/N ratio: 82db, Speaker diameter: 40mm, Impedance: 32Ω, S.P.L: 106db S.P.L. at 1 KHz Rated power: 20MW, Aggregate capability: 40MW, Frequency Response: 20Hz20,000Hz, Mic dimension: 4*1.5mm, Mic directivity: Omni directional, S.P.L.: 52+2db, Impedance: <2.2KΩ, Frequency response: 30 Hz 16,000Hz, Power supply: 3.0V
- Supports Wireless Music.
- Blue tooth protocol standards - Blue tooth V2.1+EDR.
- Receiver range - 10m / 360°.
- Carrier frequency - 2402MHz2480MHz.
- USB Interference - High-speed USB 2.0.