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Technical parameters: 1: Operating frequency 2.4ghz-2.480mhz 2: Bluetooth V5.0 compliant 3: Support music, continuously play music for 8 hours (actual test time) 4: Support call: support call, with microphone, continuous call for 4 hours 5: Support voice: support voice report number, support Chinese and English (other languages can be customized) 6: Wireless connection range: 10M 7: Transmitting power: glass2 8: Support headset & handsfree profiles 9: Built in rechargeable lithium battery 180MAH: 10: Headset talk time: 6 hours standby time: 150 hours 11: The weight is only 30g, suitable for wearing for a long time without fatigue;