Function mode: 4 Function options for rebound bow and compound bow, luggage scale, shopping scale. Suitable for peak weight or holding weight. Multifunctional portable digital scale. Very suitable for shooting and hunting.High precision: The bow and arrow scale adopts high-precision strain sensors, professional precision zero (tare) function, and super heavy-duty load-bearing 110 lbs or 50 kg.Digital bow scale: This bow and arrow scale has two functions of calculation and peak lock, which can quickly measure the weight of compound bows. After selecting the device, press and hold the button switch P or C.Operation mode: Unit selection: Press the "ON or OFF" button for 1 second, the unit can be separated between g or oz or kg or lbs, etc. Click the "On or Off" button to cycle through 4 options. After selecting the unit of measurement, choose a luggage scale or arch scale. Press and hold the button for 3 seconds, when it displays "C", it means the "hold mode" of the luggage scale when it displays "P", it means the "peak lock mode" of the arch scale.WANAN Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.