Stretchable adjustment, Suitable for a variety of head types.

Sponge filling to reduce head compression.

Comfortable to wear and relieve fatigue.

Multi-function button operation.

Can pause switching songs,Volume adjustment.

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Description:

Product Name: Bluetooth Headphones

Bluetooth version: 5.0
Speaker size: 40MM
Output power: 40mW
Audio output: tow channels
Work voltage:3.3V - 4.2V
Impedance: 32Ω
Sensitivity: 108dB
Frequency response: 20Hz-20KHz
Transmission distance: 15M
Use time: 15 hours (Talk time: about 4.5 - 5 hours)
Battery capacity: 250 mAh
Charging time: 1-2 hours
Microphone: Yes
Product size :20.5*18.5mm

Products include:

1 x product