Brand Name: SYPVRY
Style: Wired in-ear headphones
Vocalism Principle: Hybrid Technology
Origin: Mainland China
Material: Plastic
Material: Leather
High-concerned chemical: None
Communication: WireLess
Volume Control: Yes
Category: Earphones & Headphones
Certification: CE
Certification: FCC
Certification: RoHS
Certification: UL
Certification: BQB
Number Of Drivers: 2
Plug Type: NONE
Impedance Range: up to 32 Ω
Active Noise-Cancellation: Yes
Frequency Response Range: 20 - 20000
Voice assistant built-in: Yes
Wireless Type: Bluetooth
Resistance: 32
Control Button: Yes
Driver Diameter: 30
Is wireless: Yes
Bluetooth Version: 5.2
Battery life up to[hours]: more than ten hours
Charging Method: cable
Support APP: Yes
Battery Capacity[mAh]: 200
With Microphone: Yes
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
Choice: yes
semi_Choice: yes