Enjoy music while bouncing or swinging with the Vuly Pulse. Enjoy up to 4 hours of clear music that you can control while having fun. Connect to your Bluetooth device or plug in via USB for instant tunes. The Pulse receives Bluetooth from up to 10m away from your phone or music device. The Pulse easily attaches to your Vuly trampoline or 360 Pro Swingset with durable, flexible silicone rubber.