Feature: 100% brand new and high quality This device works with any Bluetooth enabled device. The device is set to revolutionize the personal date exchange from wired connections. Advanced built-in microphone which adopts D.S.P solution for echo cancellation & noise suppression. The connecting distance can be up to 10 meters (any obstacle will make the connecting distance shorter. The Bluetooth device can be connected with two phones at the same time. This device can be used as hans-free kit in car or as conference speakerphone on desk. The user manual would tell the detailed Bluetooth pairing and indicating situation of LED indicator. All buttons and ports: - ON / OFF， LED Indicator， Multi-function Button， Volume -， Volume +， Charging Socket Bluetooth Standard: Bluetooth Version3.0 +EDR Working Frequency Range: ISM 2.4Ghz to 2.4Ghz Bluetooth Profile: Speaker phone & hands-free profiles Transmitting Power: Class 2 Wireless Connecting Distance: 0 ~ 10 meters Charger Output: DC 5V ~ 6V， 400mA Built-in Rechargeable Battery: 3.7V 650mA Charging Time: About 3 hours Speaker Working Time: About 17 hours Standby Time: About 1000 hours Dimensions (L x W x H): 20cm x 6.5cm x 1.8cm Net Weight: 220gPackage Content: 1 x Bluetooth Handsfree Speakerphone 1 x Car Charger 1 x USB cable 1 x User Manual 1 x Iron Holder