Comfortable Neck-Behind Design Neck-Behind wearing style provides a comfortable, curved fit and easy button control through all-day to wear and use in light weight, a convenient storage way to carry around when you don't need them. High-Fidelity Sound Featured with CVC6.0 noise cancelling technology, our headphone filters out background noise to guarantee high quality sound and provides you crystal clearer voice for calls. Version 4.1 Bluetooth Technology Advanced Bluetooth 4.1 technology features faster and stable signal transmission, clearer sound quality and lower power consumption. You can enjoy music and calling from this durable, lightweight wireless headphones when running, sports, exercise, driving and other activities. -------------------------------------Specification------------------------------------- Support: HSP, HFP, A2DP, AVRCP Transmitting Power: Class 2 Working Distance: ≤10m Frequency Range: 2.4026GHz - 2.480GHz Charging Time: ≤ 3.5 hours Talk Time: Up to 18 hours Music Time: Up to 16 hours Standby Time: Up tp 300 hours Siri: Yes（Double click "+"） -----------------------------------Package Content--------------------------------- 1x V4.1 Wireless Headphone 1x USB Cable 2x S / M Eartips 1x User Manual
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