The Bluetooth speaker offers great quality sound with the latest Bluetooth 4.0 technology. It features two highly powerful total up to 12W acoustic drivers for excellent sound.With the ultra compact size and the dynamic fashion metallic design, it can be easily fitted into a backpack, suitcase, or a travel bag. The built in 1800 mAh rechargeable battery enables an 8 12 hours of playtime on a single charge. Key Features 1. Super Bass Sound Quality Wherever life takes you, enjoy your music with powerful stereo sound. The system is able of reproduce sound of high fidelity qualification. 2. Multi Modal Short Press "MODE" to swith 3 modes among Line in (3.5mm AUX) , Bluetooth and TF card. You can transform mode based on your demand. 3. Battery Life Long lasting 1800 mAh batteries enables a breakthrough 8 12 hours of playtime, actual playtime may vary according to sound volume and audio content. 4. Hands Free Another convenient feature of this is the voice activation for hands free phones when you need to bring more friends and colleagues into the conversation. 5. Easy to downloadYou can use the USB cable to connect the computers when you need to download the music or other file into your TF card. 6. Easy to carryUltra portable under 15 ounces(6.3 x 3.2 x 2.4 inches), so much better for travel & hiking, superlight and easy to fit in your backpack, baggage. Package Included MUSIC ANGEL Bluetooth 4.0 speaker Micro USB charging cable The user manual