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 Charging Method: cable Brand Name: SYPVRY Driver Diameter: 30 Material: Plastic Material: Leather High-concerned chemical: None Communication: WireLess Resistance: 32 Style: Headphone Frequency Response Range: 20 - 20000 Plug Type: None Is wireless: Yes Vocalism Principle: Hybrid Technology Origin: Mainland China Certification: CE Certification: FCC Certification: RoHS Certification: UL Certification: BQB Active Noise-Cancellation: Yes With Microphone: Yes Wireless Type: Bluetooth 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 Volume Control: Yes Category: Earphones & Headphones Item Condition: New Choice: yes semi_Choice: yes