This is the Big Turtle Shell by Outdoor Tech, the world's loudest ruggedized and water-resistant Bluetooth wireless speaker. Its really loudConnect to any Bluetooth-enabled device with easy one-touch pairingRechargeable lithium-ion batteryIPX5 dust-proof and water resistantBuilt in microphoneExternal controls allow you to adjust volume, change tracks, play/pause and answer callsRugged minimal designTwin grab handles built into the base for easy transport and limitless hanging/strapping options3.5mm audio-in port3.5mm audio out allows you to play two Big Turtles off of one deviceReconnects automatically to previously paired deviceNFC for easy pairingPowerful battery power bank with USB outBluetooth 4.0Voice promptsWireless range: 32 feetIncludes: AC adaptor USB charging cable, 3.5mm to 3.5mm cable and instruction manual