The Rockbox Bold M of Fresh ‘n Rebel is a medium sized waterproof Bluetooth speaker. The speaker gives you a wireless playtime of 15 hours, a built-in powerbank and is water and dirt resistant (IPX7). All these features make the Rockbox Bold M Bluetooth speaker perfect for the outdoors. The Bold M waterproof speakers can be connected via Bluetooth to create the stereo mode. And you can use your Bold M to make phone calls or to charge your phone or tablet. Features: Wireless Playtime: 15 hours Charging time: 5 hours Model: Waterproof Bluetooth speaker Built- in microphone: Yes Built- in powerbank: Yes Material of speaker: water and dirt resistant Size: 182x80x80mm Weight: 710 grams Extra: Steady rubber hook to hang up your Bluetooth speaker.