Quelima BS-990 Bluetooth 4.0 Wireless Headphones Nosie Reduction Stereo Adjustable Flodable Sport Headset with Mic


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Overview and Specifications:


Model: BS-990

Material: ABS + soft sponge

Bluetooth Version: V4.0

Bluetooth Distance: about 10 meters

Frequency Range: 2400.0-2483.5MHZ

Directional: multi-directional

Bluetooth Search Name: 990

Format: MP3

Talk Time: about 3-4 hours

Music Time: about 4-5 hours

Standby Time: about 100 hours

Charging Time: 2-3 hours

Charging Interface: Micro USB

Built-in Battery: 300 mAh

Horn Diameter: 40MM

Anti-group: 32 ohms

Microphone Size 2*4MM

Sensitivity: -42DB

Noise Reduction: active noise reduction

Working Voltage: 3.1-A4.2V

Distortion: 0.2% 105db (20upa)

Channel Difference: 1dbat1000hz