It delivers a powerful 14W stereo sound for a complete immersive experience. Stone 1200 provides a battery time of upto 9 hours without its RGB LEDs and upto 7 hours with it(@60% volume) with a charging time of upto 4 hours. Carry your splashproof speakers to anywhere with IPX7 splash & water shield leaving behind the tension of water running over, Battery Capacity (mAh) - 3600 mAh, Standby Time - 360 hours Add a second speaker with our TWS technology and enjoy sound, twice as powerful.