The Sonic Go from ZIZO packs a powerful sound in a portable package, with up to 8 hours of playtime and an IPX5 water resistance rating the Sonic Go is ready to go on whatever adventures you're headed on. Advanced bluetooth technology allows you to easily connect most devices and instantly start playing and with clear, crisp high definition sound you'll love. Want to add more fun to the adventure? True Wireless technology allows you to pair a second Sonic Go for double the sound and double the adventure. The ZIZO Sonic go is Built for Adventure and backed by ZIZO 1-year warranty. For more information about warranty terms & conditions please visit zizowireless.com/warranty. Bluetooth® version: V5.0 Wireless range: 35 ft Charging port: Micro USB Charging time: 4H Battery: 3.7V / 1800mAh Output power: 5W Playing time: 8H Waterproof: IPX5 Weight: 0.6 Ibs Speaker size: 94 × 94 × 49 mm