PDT-6E Features CPU: 32-bit high-speed ARM Flash memory : 2MB Power supply : 1) 2pcs AA dry batteries or rechargeable NiMH batteries (best 1600-2400mah NiMH batteries). 2) Supporting USB charging for rechargeable NiMH batteries. 3) With remaining power indicator on LCD display. Screen display : 128×128 FSTN LCD screen, supporting 16-row and 20-line character display . Backlight : Blue highlighted LED. Terminal size & weight : 165 x 65 x 38 mm, about 150 grams Keyboard : Standard high quality silicon 26-key keyboard Standby time : More than six months (starting from 100% remaining power). Power consumption is lower than most similar devices on the market. Scanning frequency : 60times / second. Light source : 650nm red laser Barcode scan width : Adjustable up to 20cm