Sleeping Mask 3D Eye Mask HeadSet Headband Soft Elastic Comfortable Wireless Music Headset Eye Mask With Mic For Side Sleepers

Sleep Headphones Personalised Gifts for Dad Sleepphones – Bluetooth Headband Sleep Earphone Sleepband Built-in HD Stereo Speakers, Ultra-Soft Wireless Sleeping Headphones Birthday Gifts for Her Him

product description
Model: YR-05
Bluetooth protocol: V5.0
How to use: head-mounted
Channel: stereo
Frequency response range: 20HZ-20KHZ
Charging voltage: 3.7V-4.2V
Sensitivity: 88DM
Signal to noise ratio: 90db
Speaker impedance: 32Ω±15%
Speaker specification: ф30mm
Operating range: 10m
Use time: 10H (50% volume)
Battery capacity: 200mAh
Bluetooth search name: BT-01
Material: memory foam
Color box size: 16*12*6cm
Individual packaging: 200g