MbientLab's USB Conic Case/Enclosure (Lower half) to fit your MetaWear Smart product board available at www.mbientlab.com/store. The enclosure fits a 26mm x 17mm x 5mm MetaWear board with a lithium battery attached. This case has a slit for the micro-USB header to recharge your MetaWear board. This case will fit the battery (100mAh), buzzer and motor vibrator and extra sensors you may want to attach to the board.