New Upgrades: Turtle Shell 4.0 charges faster than before, with a charge time of 3 hours versus 4 hours for 3.0. 4K mAh battery is still standard so you can charge a small device while jamming to your favorite tunes. The charging port was upgraded to a USB-C for greater compatibility and better charge efficiency and no more mini-USBs! 360 Degree Sound: Turtle Shell 4.0s Bluetooth speakers' patented Dual-Directional Sound can produce an immersive 360-degree audio experience for a powerful sound from all angles, with crisp midrange and full low end from passive radiator at the base of speaker. 4.0s upgraded daisy-chain feature allows you to now link up to 50 Shells together, creating a wall of portable stereo sound! Sleek Design: This Bluetooth speaker boasts two full-range drivers and a bass radiator that are housed inside its unique polygonal housing. 4.0s speaker provides a full range sound without distortion. Also comes with standard 1/4"-20 camera threading mount & c