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