Add this hands-free solution for a fantastic favorite! The wireless Bluetooth speaker works with MP3, smartphones and other devices to create convenient cellphone calls, and play music from inside the high-quality steel casing. This great accessory includes a built-in subwoofer, works from a capacity lithium battery for four straight hours of playback, works as a headset and showcases your company trademark in an excellent location to meet their entertainment and your advertisement needs. Any dorm room, bedroom or office setting will be a little more fun with this sound system included. It's also available in various colors to match your company's colors. They'll speak well of your brand with this great giveaway! Features: Standard 3.5mm Audio Input which support MP3, Mobile Phones, iPod, iPhone, etc. Works as far as 10 meters from the Bluetooth device Support Talking / Listening even if the Device is Located in Another Room With High Quality Steel Casing Can Last Up to 4 Hours of Continuous Playback Big Capacity Battery with 450 mAh Shows Speaker's battery level on iPhones Bluetooth Support for Hands Free Cell Phone Calls Has Wonderful Built in Subwoofer speaker High Capacity Lithium Battery Also Works with Headset Price Includes: TECHNICAL INFO: Charging Voltage: 5V Operating Voltage: 3.7V Output Power: 3 -5W Frequency Response: 60Hz- 18KHz Battery Capacity: 450 mAh Lead Time (including shipping time): Standard Service (business days): 25 days (Q