Inateck Marsbox Bluetooth 4.0 Wireless Speaker with 15 Hour Playtime, Stereo High-Def Sound Speaker with 2x 5 Watts Drivers Powerful Dual 5-watt drivers give out amazing bass and explosive sound, shake your party. Bluetooh 4.0 speaker(fully backward compatible) with up to 33ft/ 10m bluetooth signal for all Bluetooth-enabled devices; Alternative 3.5mm audio jack for non-Bluetooth devices. Built-in 2200mAh rechargeable Lithium Ion battery offers 10-15 hours of play time. Built-in high sensitivity Microphone, hand-free telephone calls. Easy pairing and connection to Bluetooth devices without code/PIN. Release your favorite music in minute. Fashionable and stylish design for Android, iPhone, iPad, tablets, smartphones, radio players other Bluetooth enabled digital players or media devices with aux port.