Prepare to be amazed the first time you press play — with JAM Replay, you get booming sound from a speaker the size of a baseball. (Seriously, the bass is nuts!) With its compact size and rubberized exterior, it’s perfect to toss in your bag and take along for the ride. It pairs with any Bluetooth device in a 30-foot range, and automatic voice prompts make synching your device a cinch. When fully charged, it kicks out beats for up to five hours. It also comes with an integrated speakerphone, so you can answer calls directly from your JAM Replay — all without missing a beat.