LinDon-Tech Portable Blutooth Speakers - Super Mini Metal Wireless Bluetooth Speaker with USB and TF card port for iPhone, iPad, Samsung, Nexus, HTC and More (Cobalt Blue) 1, Small Led light bluetooth speaker (D2.8"x H1.8"), plays up to 30 feet (10 meters) from any Bluetooth-enabled device, intelligent voice prompts make pairing your devices easier than ever. 2, Support handsfree calls(answer,reject,end calls) with built-in microphone. Support TF card slot playing. 3, Speaker has internal 3W speaker offer you clear, full-range sound you might not expect from a compact speaker. This luxury speaker provides crystal clear sound! 4, The rechargeable battery offers you up to 3.5 hours of playtime, 5 hours of conversation and 24hours of standby time on a single charge. 5, Universal Compatibility for all bluetooth device: iPods, iPhones, iPads, Samsung Galaxy phones, Android phones, Blackberry phones, MP3 players, CD players, Tablets, PC and laptops, and More.