Suit for: All BT device Function: BT, Noise Cancelling, Microphone Technology: BT4.0 Radio frequency: 2.402-2.480GHz Audio output: 35mW Transmission range: Less than 10m Charging Power: Input AC 110-240V; Output DC 5V Charging time: 2 hours Talk time: 4 hours Music play: 3 hours Standby time: 120 hours Wearing styles: In-Ear mini headphones Battery: 50mA rechargeable lithium battery Good Sound Quality Exquisite Design Quality Performance Style: In-Ear Connectors: USB Use: Mobile Phone Instructions: Long time press earphone button more than 5 seconds You will see red and blue light flashing alternately Then connect your BT, and use earphone Package Include: 1 x Headphone 1 x Charging Cable
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