Origin china Model number hs-100 Hand-held laser bar code scanning guns Three interfaces:ps/2, usb, ps232 Physical characteristics Dimensions:2.4 in. H x 7.1 in. L x 2.4 in. W(6.2 cm h x 18 cm l x 6 cm w) Weight:approximately 4.3 oz. (122 g) Voltage & current:5 +/-10%vdc at 100 ma(stand by: