features True Wireless (TWS) BT 4.1 technology, built-in high-grade microphone speaker, hands-free function and lightweight design. It will offer you wonderful music, you can greatly enjoy your favorite Music. Features: BT Connection: True Wireless (TWS) BT 4.1 Technology ensures transmitting strong signal in high speed and offering high-fidelity stereo music with a wireless audio range of 33ft (10m). TWS Headphones: Wireless dual ear stereo design, left and right ear channel separation. You can use the Left and Right ear headset solely (single track mode), or use in pairs (stereo mode). Lightweight Invisible: The BT headset with 5g lightweight, mini size and ultra-soft ear caps, provides you long time wearing comfort, and guarantee 100% stability even when doing exercise. Built-in Microphone: Built-in microphone enables hands-free call, ideal for in-car or working use. One multifunctional touch button supports touch operations, effortless and comfortable. Headphone Magnetic Charging: 70mAh battery in each headphones ensures 3-4 hours of working time. The headphones will charge automatically in the charging box and stop automatically after fully charged. Charging Box: 430mAh charging box enables headset charging for about 3 times. It can be charged through Micro USB port.