P9 Wireless Bluetooth HeadphoneP9 WIRELESS BLUETOOTH HEADPHONE PRODUCT DESCRIPTION: Bluetooth version: 5. 0 Transmission distance: 10m Battery capacity: 400mAh Frequency response: 20Hz~20kHz Sensitivity: 1053db Speaker diameter: 40mm Call playback time: about 7 10 hours Standby time: about 120h Charging time: about 2h Built in microphone: YES Usage mode: Bluetooth TF card mp3 mode Maximum Support 32g Charging voltage: 5V 1A Song switching: Support Volume adjustment: Support Answer
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