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Name: M39 Ear Buds

M39 Wireless Headphones Digital Cool Breathing Light Earbuds Fingerprint Touch Power Bank IPX7 Support Bluetooth

Specifications: Bluetooth version: 5.1

Charging compartment battery capacity: 1200mAh

Working hours: 12 hours

Standby time: 220 hours

Mode of operation: Touch

Waterproof Grade: IPX7

Battery voltage: 3.7V

Input voltage: 5V

Distance: ≥10m

Speaker: 20-20khz

Bluetooth operating frequency: 2.402-2.48Ghz