Black Hi-Fi Bluetooth Speaker: This INCREDIBLY Small bluetooth speaker packs a HUGE sound. The BT4 Hi-Fi bluetooth speaker has amazing dynamic range and uses state-of-the-art micro speaker technology!
New Bluetooth V3.0 technology, Compatible with all Bluetooth-enabled devices (2.1 and over).
.Built in 300mAh rechargeable battery lasts up to 3 hours.
Small and compact. Size is Φ1.45 x H 1.65 inches.