Sonkir Portable Bluetooth Speaker, TWS Bluetooth 5.0 Wireless Speaker with 3D Stereo Hi-Fi Bass, Built-in 1500 mAh Battery, 12H Playtime (Red)

TWS Function ? True Wireless Stereo (TWS)- Two speakers can be paired to form a left and right Dual Channel Stereo system. If you use them both at the same time, the volume controls from speaker one controls both of them. No delay, good sound quality.