B39 Wireless Headphones Stereo Bluetooth Headset Noise Cancelling Over Ear With Mic Wireless Earphone

Wireless Headphones Stereo Bluetooth Headset Noise Cancelling Over Ear With Mic

Features:

• HiFi Powerful Bass Stereo Sound Effect: 40mm diaphragm speaker drivers, deep bass stereo sound, enjoy the wireless high quality music
• Comfortable Over-Ear Fit: Soft protein leather earpad and retractable headband lifts the burdens for your ear. No discomfort after long-time wearing
  
• Comfortable and Foldable: Technical ergonomics design with soft earmuffs simulated to human skin texture, ensure long lasting comfort
  
• Wireless and Lightweight: Ear Pad headphones for enjoying extended listening of TV and audio—without disturbing others
  
• Built in Microphone: supports hands-free call and voice reporting incoming call number. With the latest enhanced technology makes you voice sound clearer in noisy environments
  
• Ever Power Off, Both Wireless & Wired: 1. The wireless mode: A built-in 400mAh battery provides up to 10-hr music time or talking time in a single charge; 2. The Wired mode: you can also use it as a wired headphone with the provided audio cable so the headphones will never power off
  
• Bluetooth 5.0 Adopt: The Bluetooth 5.0 CSR Chipset, lower power consumption, superior compatibility. Compatible for all the mobile Phone, Tablet PC, Notebook, any devices with Bluetooth function Or has A 3.5mm Audio Jack
  
• Multi-Functions: headsets have several options for listening enjoyment. Built in TF card slot and you can use a TF/Micro SD card with loaded MP3 music and listen to the songs directly on your headsets. ?Support 32GB Memory Card?
  
• Colorful LED Light: Seven-color transform cool breathing light, shine everywhere, anytime.
  

Specification:

• Bluetooth Version: V5.0 Support Bluetooth
• Mode: 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 lights alternately flashing
• Headset 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
• Operating Temperature: -20? - 55?
• Other Features: support status indicator, charge indicator display