PartyBoost allows you to pair two JBL PartyBoost-compatible speakers together for stereo sound or link multiple JBL PartyBoost- compatible speakers to pump up your party. With 11 distinct color options, the Flip 5 is anything but boring. Broaden your spectrum with JBLâ€s signature sound. Slip this little gem onto your wrist and get grooving. Its durable fabric material and rugged rubber housing keep the Flip 5 safe while you let loose in the great outdoors.