"Sleek design with improved connectivity and range makes the Wet Sounds A-Link Plus Kit with SKAA wireless audio technology a must-have for your next adventure when sharing audio signals. Use it on the boat, at home, at an event, or while out riding the trails. With the unique cradle/dock, the A-Link Plus Kit lets you easily stick it to your windscreen out of the way, instead of rolling around in a dark glove box or dashboard. Connect up to 4 receiving units per 1 sending unit across multiple audio systems. With improved range, the A-Link Plus lets you share your audio signal up to 500m (1,640') between links. An integrated connection harness includes micro USB for charging, with a 3.5mm input and output connections. Includes 2 transmit/receive units, two 3.5mm cables, one 3.5mm male-to-dual-3.5mm-female aux Y-cable, and one USB type-A to dual-micro-USB-male charge Y-cable. Each unit: 6.5""L x 1.32""W. Receiver runs up to 9.5 hours, transmitter up to 5.5 hours. Sends and receives wireless audio from up to 500m Unique cradle/dock design with secure hold and convenient controls Easily sticks to windscreen Integrated connection harness with micro USB, 3.5mm input, and output connections"