ADVANCED SOUND TECHNOLOGIES - Equipped with a 4-inch mid-low driver and dual 1.25-inch silk dome tweeter, 30W+15W*2 (RMS) total output power with Class-D TI digital amplifier chips, this speaker delivers a powerful bass and clear treble. HI-RES AUDIO CERTIFIED FOR IMMERSIVE LISTENING - Certified for Hi-Res Audio and Hi-Res Audio Wireless, ensuring every note is crystal clear. Whether you're streaming wirelessly via Bluetooth 5.4 or using USB/AUX inputs, you'll experience rich and detailed sound. MULTIPLE CONNECTIVITY OPTIONS FOR VERSATILE USE - With Bluetooth 5.4, WiFi (5G and 2.4G), USB, and AUX inputs, this speaker offers versatile connectivity to suit all your needs. MULTI-ROOM AUDIO SYNCHRONIZATION - Works with Airplay 2, you can group one or more speakers into a multi-room music system. 12-HOUR BATTERY LIFE - The built-in 5200mAh battery offers up to 12 hours of playtime, making it perfect for home, office, and on-the-go use.