iLive Dual Portable Bluetooth Speakers, 4.8 x 3 x 10 Inches, Black (iSBW2116B) Bluetooth wireless speakers; IPX4 water resistant Hands free speakerphone and built in microphone Wireless range: 33 feet to main speaker, 16 feet between speakers Micro-USB port on speakers for power and battery recharge; Battery power indicator Built-in rechargeable battery; Battery life: ~5 hours at 50% volume