This portable small size electronic hoist scale can be used for factory weighing, outdoor hunt-ing items weighing and so on. With the bu-zzer function and the backlight functions, also has four units for you to changing to use, come on and try it, it will not let you down. Features: With LCD display screen and with LED backlight, you can choose to open or close the backlight by yourself, so you can see the data more clearly. Tare button: light press the button can peeling weighing, long press to switch the two modes of locking and unlocking. Five units changable: with the kg, lb, jin, oz and c these five units for you to changing in your different needs. With 1M tape design, not only can be used for weighing, but also can measuring length. With the built in rechargable battery, you do not need to worry about the suddenly power off. BT4.0 function: This function is the A27L-B type has, with this function, you can makes the electric scale work with the APP on your mobilephone to use, give you a more intelligent using experience. (A27L does not have this function) Specifications: Material: ABS Type: A27L, A27L-B (optional) Measuring ran-ge: 75kg/10g(the upper weighing can reach 75kg, indexing value is 10g, the lower weighing can reach 40g, error is 0~30g) Battery: 1 * lithium battery, 200mAh (included) Item size: 105 * 70 * 28mm / 4.1 * 2.8 * 1.1in Item weight: 175g / 6.2ounce Inner diameter of the sub-opening circle: 21mm / 0.8in Minimum opening distance: 17mm / 0.7in Package size: 146 * 96 * 38mm / 5.7 * 3.8 * 1.5in Package weight: 220g / 7.8ounce Packing list: 1 * Electric Scale (Optional) 1 * User Manual 1 * USB Cable