【Powerful Sound in Compact Design】The ACEFAST K2 Air delivers impressive audio with dual 2.75-inch full-range speakers, offering 10W*2 rated power and 20W*2 peak power in a portable package. 【Versatile Connectivity】Equipped with Bluetooth-compatible 5.3, the speaker supports various modes including Bluetooth-compatible, USB drive, and True Wireless Stereo (TWS) for flexible usage. 【Enhanced Audio Experience】Featuring two switchable EQ modes and a built-in DSP chip, the K2 Air optimizes audio signals for superior sound quality. 【Long-lasting Battery Life】With a 4400mAh battery capacity, enjoy up to 10 hours of playtime on a single charge, perfect for extended outdoor use. 【Durable and Water-resistant】Boasting an IPX5 water resistance rating, this speaker is built to withstand splashes and light rain, ideal for outdoor adventures. 【Immersive Atmosphere】Enjoy RGB lighting effects that add a visual dimension to your audio experience, enhancing the ambiance of any setting. 【Hands-free Calling】Integrated hands-free calling functionality allows for convenient communication without interrupting your music. Specifications: Bluetooth-compatible Version: 5.3 Chip: BP1032A22 Battery Capacity: 4400mAh Charging Time: 3 hours Playtime: Up to 10 hours Speaker Size: 2.75-inch full-range speakers x2 Rated Power: 10W x2 Peak Power: 20W x2 Water Resistance: IPX5 Materials: Plastic, fabric mesh Dimensions: 283 x 124 x 120mm Weight: 1.85kg Audio Channels: 2.0