B39 Headphones Foldable Over the Head Waterproof

B39 Headphones Description

B39 Headphone Colorful LED lights: seven-color transform cool breathing light, which will help you be more charming.
Headphones have a variety of options for listening. With a built-in TF card slot, you can use the TF / Micro SD card with the loaded MP3 music and listen to the song directly on the headset.
Designed with Bluetooth 5.0 CSR chipset for lower power consumption and higher compatibility.
Compatible with all phones, tablets, laptops, and any Bluetooth-enabled device or device with a 3.5mm audio jack.

Built-in microphone of B39 Headphones:

Supports hands-free calling and voice report caller ID. With the latest enhancements, your voice sounds clearer in a noisy environment.
40mm diaphragm speaker driver, deep sound quality stereo, enjoy wireless high-quality music.
Soft leather ear pads and a retractable headband reduce the burden on your ears. Do not feel uncomfortable when wearing it for a long time.
Ergonomic design that simulates soft earmuffs based on human skin texture to ensure lasting comfort.

Specification

• Name: B39.
• Uses wireless headphones, and voice headsets.
• Bluetooth version: V5.0.
• Bluetooth mode support: A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5.
• Frequency: 2.402-2.480GHZ, 2.4G ISM band.
• RF performance: receiver sensitivity: -84dBm; transmit power up to 4dBm.
• Frequency response: 20 Hz-20 KHz.
• Signal to noise ratio (SNR): 70Db.
• Total harmonic distortion rate (THD) 0.1%.
• Power indicator: Red and blue indicators flash alternately.
• Headphone charging: rechargeable 400MAH lithium battery.
• Charging port: mini 5-pin USB charging interface.
• Normal charging time: 2.5 hours.
• Talk time: up to 10 hours.
• Standby time: up to 20 days.
• Working temperature: -20 ° C -55 ° C.
• Other features: support status indicator, charging indicator display.
• Color: black red, red black,white,black.

Note:

There might be a bit color distortions due to different computer resolutions.
Please allow 1-3mm error due to manual measurement, make sure you do not mind before you bid.