The Spbt1042 rechargeable wireless Bluetooth speaker is great for any outdoor adventure. It has a 500mAh battery that can last up to 8 hours of continuously playing music and 9 continuous hours of talk time. The speaker can be wirelessly connected to another Spbt1042 speaker allowing for dual speaker output. The speaker has a 5 Watt output for crystal clear sound. The speaker is portable and easy to carry making it a great option for camping, parties, grilling, or just about any other outdoor activity.