A unique, Sony-developed speaker unit allows for deep, punchy MEGA BASS and higher sound levels while maintaining clarity. The powerful rear tweeter makes the XP700 sound incredible from anywhere - even from behind the speaker - so you can place the speaker anywhere you like. When charging your speaker, the Battery Care feature stops charging just before the battery reaches 100% to increase the health and life span of the battery. Keep the party going with up to 25 hours of battery life on a single charge, and USB-C quick charging gives you up to 3 hours of playback after just 10 minutes of charge time. With a mid-range speaker for vocal clarity, front and rear tweeters for multi-directional sound, and X-Balanced speaker units for deep, punchy MEGA BASS, the Sony XP700 X-Series Mega Bass Portable Bluetooth Wireless Speaker is tuned to enjoy all different genres of music.