N21 TWS Earbuds Wireless Bluetooth v 5.3 Headset. It’s time to take your music-listening experience with high-capability 600mAh rechargeable lithium polymer battery with 1hours of charging time that will allow you to listen to your music up to 36 hours straight. High-Quality Material with Styles & lightweight design. Perfect fit & comfortable in your ear, for all-day wearing with no distractions. Fast pairing, Calls & listening to music on the go takes a turn for the are working out or running. Advanced Bluetooth technology ensures a steady wireless connection without a call and music.