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产品名称：sport bluetooth earphones b12
features:
1. bluetooth v4.1 csr8635 chip with strong anti-interference
2. 300 hours standby time
3. neck loop design provides high stability wearing and noise cancelling
4. multi-function remote control with microphone
1. bluetooth v4.1 csr8635 chip with strong anti-interference
2. 300 hours standby time
3. neck loop design provides high stability wearing and noise cancelling
4. multi-function remote control with microphone
specifications:
bluetooth version: v4.1
working range: 10 meters
chipset: csr8635
frequency: 20hz~20khz
battery: 135mah
weight: 26g
music/talk time: 6 hours
standby time: 300 hours
charging time: 2.5 hours
driver unit: 10mm
impedance: 32ω