YR-04 Stereo Wireless Bluetooth-compatible V5.0 Sleep Headphones Calling Music 3D Sleep Eye Mask Cover Earphone Night Rest Shade Eyepatch Headset
Feature:
1. Wireless Bluetooth-compatible function, music assisted sleep.
2. Three-dimensional design, according to the CONTOUR of the face with a comfortable 3D design perfectly fits the face.
3. Comfortable, breathable and not stuffy.
4. It adopts a curved shading design that completely fits the nose to prevent light from entering and affecting sleep.

Specification:
Model: YR-04
Material: Polyester + cotton
Color: Black, Pink
Bluetooth-compatible protocol: V5.0
Operating range: 10m/32.8ft
Bluetooth-compatible search name: BT-01
Frequency range: 20Hz-20KHz
Charging voltage: 3.7V-4.2V
Charging current: 150-200mA
Sensitivity: 88dB
Signal to noise ratio: 90dB
Speaker impedance: 32Ω±15%
Speaker size: Diameter 30mm/1.18in
Charging time: 2h
Duration of use: 10h (60% volume)
Battery capacity: 200mAh lithium battery
Packing size: 190x120x35mm/7.48x4.72x1.38in
Product gross weight: 168g

Note:
1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
2. Please allow 1-3cm measuring deviation due to manual measurement.