Bluetooth Mono Headsets: BH02 Feature: *Bluetooth v 1.2 compliant. *Headset and handsfree profile supported. *Up to 8 hrs talk time and 250 hrs standby time. *The smallest and the lightest weight Bluetooth wireless headset *Removable ear-hook fits either ear. *Fashion and stylish design. *Compatible with various Bluetooth enabled devices such as mobile phones, PDAs and Laptops. *Friendly user's interface. *Noise suppression, echo elimination and duplex sound for crystal clear quality calls. Specification: General Radio: Carrier Frequency : 2.4~2.480GHZ Radio Performance – Receiver Rx sensitivity < -80 dBm Radio Performance: Bluetooth Class 2, up to 5~10 meters (in open space). (The maximum operating range depends on the paired phone model, battery power, and environmental factors.) Spread Spectrum: FHSS (Frequency Hopping Spread Spectrum) Bluetooth Profile Supported: HSP (Headset Profile); HFP (Hands-Free Profile) Antenna: Chip Antenna Input Power: 5V, 200~500mA, AC adapter Battery: 3.7V / 120mA / Li-Polymer / Rechargeable Standby Time / Talking Time: 250 hours / 5 hours (The maximum operating time depends on the usage frequency and environmental factors. A long distance wireless connection and use with a mobile phone will increase the power consumption.) LED Indicator Status: Blue: Power on mode or Full charged Red: Low power or being charged Blue & Red: Pairing mode Environment: Operating Temperature -10 ?? ~ +55 ??