brand new and high quality Features: High precision with 30g/0.001g accuracy, suitable for weighing gold, jewelry, medicine powder or other small things. Large 5-digital blue LCD display for easy reading. Different units: g/oz/ozt/for t/ct/gn are available for most countries to use. The count (PCS button) function gives you an accurate count and tare weighing function ensures more precise result. Wind-shelter to prevent influencing the weighing accuracy by the interference of external environment. Scale only, other accessories demo in the picture is not included! Specification: Powered By: 2 x 1.5V AAA Battery (Not Included) Material: ABS Capacity and Accuracy: 30g/0.001g Units: g/oz/ozt/for T/ct/gn (Switchable) Nominal Value: 0.003g Repeatability: 0.002g Back Light: Blue Backlight Functions: ON/OFF, UNITS, TARE, PCS Low Battery Alarm: Low Dimensions: app.14.4 x 8.45 x 5.1cm/5.67 x 3.33 x 2.01in Color: Black Quantity: 1 Pc Function Button and Instruction: 1. ON/OFF (Switch on/off) Put batteries into the battery room of the scale, place the scale on a solid and flat board without wind and vibration, keep the bubble in the center of the black ring. Put ON/OFF will show 8888 then 0.000, it's ready to work. Press ON/OFF switch off the scale. If there is wind when weighing, please put down the wind shield. 2. UNIT (UNIT switch button) Press [UNIT] to switch weighing unit: g/oz/ozt/for t/ct/gn. Press [UNIT] for key for 4 seconds, all the units will light up and unit OZ blink, then press PCS to hold or close this unit, Press UNIT to select next unit, unit g can not be closed. Press [UNIT] for 4 seconds to return normal weighing state. 3. TARE for Touch [TARE] to for Re-zero. 4. PCS (Counting function) Select 25pcs of samples(or 50, 75, 100pcs of samples) At normal weighing state, put the samples on the scale, then press PCS 4 seconds and the scale shows the weight of the samples, press PCS to confirm, then LCD will display PCS+ sample value. You can put more articles, the scale will show "PCS XXX", which is quantity of articles. Calibration Function: Turn on the scale, press ON/OFF for key for 4 seconds, the scale shows 0 then the weight value(if the capacity is 30g, 3.000 will blink), put30g calibration weight on it, and shows PASS, then calibration is completed. (20g calibration weight is included with the product, you can press PCS to reduce the weight value to 20g, then put 20g weight to do the calibration), when the calibration value blinks, press UNIT to increase the value and PCS for key to reduce the value. According to the amplitude of 10G to increase or reduce, we can select the right calibration weight, the system will remember the last setting operation. Auto power off setting Turn off the scale, press ON/OFF for 4 seconds and shows 88888 and F1-1, Press UNIT to choose the correct power on for time(from 0 to 5), 0=do not power off automatically, 1-5 means the scale will power off automatically when no any operation on this for time. You can choose the correct times as necessary. The scale can work normally after setting completed. Caution: 1. This product is a precision measuring instrument. Please pay attention to operate, do not disassemble by yourself, if there is any problem, contact the after-scale person. 2. Place the scale on a solid and flat board without wind and vibration, keep the bubble in the center of the black ring. 3. Use the scale in for windows environment, Please put down the wind shield in windy. 4. Keep the scale out of your mobile over 50cm. 5. Please do the calibration when the weight environment changed, even if the temperature changes just 1 degree. 6. Do not use the product in wet environment. Please remove the battery and keep it in a dry and cool environment when not in use. 7. Do not use corrosive cleaners to wipe the product. 8. This product is patented. Please do not counterfeit. Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Digital Scale 1 x Tweezers 1 x Stainless Pan 1 x Package Bag 1 x 30g Weight