Number Of Drivers: 2
wireless bluetooth headphones  blindfold: The Silk Sleeping Headphones Soft  Comfortable and block out the light
bluetooth earphones: The Bluetooth Eye Mask adjustable and fits most of people
Is it washable?: This Bluetooth Eye Mask can be washed by hand or machine
Sound Isolating: Yes
Charging Method: cable
Brand Name: SYPVRY
Driver Diameter: 30
Material: Plastic
Material: Leather
Hign-concerned Chemical: None
Communication: Wireless
Resistance: 32
Connectors: Type c
Style: Headphone
Frequency Response Range: 20 - 20000
Plug Type: None
Waterproof: Yes
Is wireless: Yes
Vocalism Principle: Hybrid Technology
Origin: Mainland China
Certification: CE
Certification: FCC
Certification: RoHS
Certification: UL
Certification: BQB
Active Noise-Cancellation: Yes
Earcups Type: Open-back
With Microphone: Yes
Wireless Type: Bluetooth
Weight[g]: 140
Battery life up to[hours]: more than ten hours
Support APP: Yes
Impedance Range: up to 32 Ω
Bluetooth Version: 5.2
Voice assistant built-in: Yes
Control Button: Yes
Battery Capacity[mAh]: 200
NFC Technology: No
Volume Control: Yes
Category: Earphones & Headphones
Choice: yes
semi_Choice: yes