The ACEFAST K2 Air packs dual 2.75″ drivers and DSP tuning to deliver lively, room-filling sound with 40W peak output. Enjoy Bluetooth 5.3 wireless, USB-A MP3 playback (up to 32GB), and party-ready RGB lighting. Link two units for true wireless stereo (TWS), and keep the music going with a 4400mAh battery rated for about 10 hours; recharge via USB-C in roughly 3 hours. A splash-resistant IPX5 build and included shoulder strap make it a versatile pick for home, travel, or outdoor hangouts.