Headphone Headset Wireless Bluetooth Earphone

effective distance: about 15meters

charge time: about 3hours

With Microphone: Yes

Wireless Type: Bluetooth

Waterproof: Yes

Volume Control: Yes

Vocalism Principle: Dynamic

Total Harmonic Distortion: 0.5%

Support Memory Card: Yes

Playing time: >15hours,powered by rechargeable 400MAH battery

Max Output: 1000mW

Frequency Response Range: 20 - 20000Hz

Frequency: 2.40GHz-2.48GHz