The ACEFAST K3 Max is a compact portable Bluetooth 5.4 speaker that hits well above its size. A 2.1 driver system (1× mid-low + 2× tweeters) with a rear passive radiator and DSP tuning delivers 40W rated / 80W peak output with punchy bass and clear highs. Choose from Music/Movie/Party EQ modes and add ambience with RGB lights. Play your way with Bluetooth, USB, or TF card (up to 32GB), AUX-in, or link two units via TWS for wider stereo. The 5000mAh battery lasts about 20 hours (50% volume) and recharges via USB-C. With IPX6 splash protection and a sturdy design with a strap handle, it’s ready for home, office, and outdoor hangouts.