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1. wireless earphone, wireless distance can reach 10m
2. can adjust pothook, can be used on left or right ear.
3. with volume control key
4. with bluetooth indication light
5. Rechargeable lithium ion battery , Talk time up to 4.5 hours , Standby time of 140 hours
6. Bluetooth v1.1 compliant, can support most brands of bluetooth mobile phone and Motolora V500, V600, A760, A768, V880 ect.