... Product featuresFast, reliable, durable and lightweight design Supports Bluetooth, USB or Serial port (RS-232) connectivityWeighs under 11 ounces (312g) for ... host device, USB 2.0 or Serial port (RS-232)IndicatorTricolor LED for Power, Bluetooth, Error MessageKeypadPower, Feed, and Mode ... Lithium-ion battery, self discharge rate <10% weekAC charging adapter 100-24OVAC, 50/60 Hz; 9V 1A; 9VDC 4A ...