Put your brand on something that's perfect for good sound and effective advertising with the Optimum Speaker. This Bluetooth speaker pairs from up to 30 feet away and is perfect for use at home, around the office, outside and beyond. Simply pair your handheld device with the speaker to enjoy dynamic stereo sound. This high-def Bluetooth 3.0 wireless speaker comes with a 230 mAh lithium ion battery included. Enjoy up to 1 hour of playtime.