YR-05 Wireless Bluetooth Eye Mask Home Travel Office Lunch Break Burst Fatigue Music Sleep Eye Mask(Black)

1. Bluetooth protocol: V5.0
2. Frequency range: 20HZ-20KHZ
3. Charging voltage: 3.7V-4.2V
4. Charging current: 150-200mA
5. Sensitivity: 88DM
6. Signal to noise ratio: 90db
7. Speaker impedance: 32Ω±15%
8. Speaker specification: 30mm
9. Operating range: about 10m
10. Charging time: about 2H
11. Use time: about 10H (60% volume)
12. Battery capacity: 200mAh lithium battery
13. Bluetooth search name: BT-0
14. Material: polyester + cotton
15. Weight: about 132 grams
16. Packing list: eye mask, USB charging cable, manual

Features:
1. Combine the facial contour with a comfortable 3D stereo design, which fits the face
2. Adopt a compact and fit curve shading design to prevent light penetration
3. The fabric is skin-friendly and breathable, comfortable and not tight, light and not stuffy
4. Paste design, easy to wear, can be adjusted at will
5. USB charging design, convenient to recharge and use
6. 5.0 Bluetooth, multi-function use, compatible with various Bluetooth communication devices