Shen Zhen Suo Yi Technology V9 High End Business Bluetooth Headset Instruction technical standards: the latest Bluetooth version V4.0 imported chips, imported chips CSR-8635 Bluetooth protocol: A2DP, A VRCP transmission distance: 10 meters standby time: 180 hours talk time: about 10 hours continuous play time: about 8 hours Weight: only 16 grams dimensions: 100* wide …
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