Battery Capacity 1: 35mAh/0.135Wh(headphones)

Battery Capacity 2: 400mAh/1.48Wh(charging case)

Bluetooth Version: 5.3

Brand Name: FYUERO

Category: Earphones & Headphones

Certification: CE,DOT,EAC,EPA,FCC,GMP,RoHS,TGA,UL,KC,pse,weee,None,BQB,CB

Communication: WireLess

Control Button: Yes

Frequency Response Range: 20 - 4000

Material: ABS,Plastic

Sensitivity: 40

Sound Isolating: YES

Support Memory Card: Yes

Vocalism Principle: Dynamic

Voice assistant built-in: YES

Volume Control: Yes

Waterproof: Yes

With Microphone: No