Jawbone Mini Jambox Wireless Speaker (Certified Refurbished) (Silver Dot) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90 day warranty 10-hour battery life and crystal-clear, wireless sound with Bluetooth 4.0 Built in speakerphone lets you take calls on the go Activate Multi Play to connect two MINI JAMBOX speakers for twice the sound. Team up with a friend to alternate songs and DJ effortlessly Personalize MINI JAMBOX with the Jawbone app