B39 Wireless for Bluetooth Stereo Headset Over-Head Gamer Headphones Strong Bass Earphones For Xbox PS4 PC Description: 1. HiFi Powerful Bass Stereo Sound Effect: 40mm diaphragm speaker drivers, deep bass stereo sound, enjoy the wireless high quality music 2. Comfortable Over-Ear Fit: Soft protein leather earpad and retractable headband lifts the burdens for your ear. No discomfort after long-time wearing. 3. Comfortable and Foldable: Technical ergonomics design with soft earmuffs simulated to human skin texture, ensure long lasting comfort 4. Wireless and Lightweight: Ear Pad headphones for enjoying extended listening of TV and audio—without disturbing others 5. 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 6. Ever Power Off, Both Wireless & Wired: -The wireless mode: A built-in 400mAh battery provides up to 8-10hr music time or talking time in a single charge; -The Wired mode: you can also use it as a wired headphone with the provided audio cable so the headphones will never power off. 7. 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 8. 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. 9. Colorful LED Light: Seven-color transform cool breathing light, shine everywhere, anytime. Specifications: 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 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