Thanks for selecting the scale. Please read the user manual before use it
Features:
6 different weighing modes
"Tare" button – weigh items in a container – the tare button will subtract the container weight from the total reading
Spacious weighing platform 
Backlit LCD screen
3 minute auto power off saves battery life 
Low battery alarm 
Cover and pouch protect scales when not in use 

Specification:
Maximum weight: 30g / 0.001g， 1.0582oz / 0.0001oz， 150.00ct / 0.005ct， 0.9645ozt / 0.0001ozt， 19.29dwt / 0.001dwt， 462.975gn / 0.001gn 
Display: 5 digit blue backlit LCD 
Auto power off: 3 minutes 
Operating temperature: 5 - 35°C
Scale dimensions: 9 x 10 x 3cm ( 3.5 x 4 x 1.2 ”)
Screen dimensions: 3.2 x 2.2cm ( 1.2 x 0.5 ”)
Weighing platform diameter: 2cm ( 0.7") 
Powered by: 2X AAA batteries ( Not included )
Unit conversion: g / oz /ozt / dwt / ct / gn
Color of back light: blue ( optional )
Bubble level

Operation:
Install battery"AAA"x2. Put the scale on a vibrationless， calm， no electromagnetic interference and solid plat surface
1. Turn on the scale. Press [ON] for 2 seconds until 0.000 appears
2. Weighing. Put the article on the scale's salver. You can read the data when "o" appears on top left corner
3. Unit conversion. Press [MODE] to change weighing unit
4. Tare. Press [TARE] for Re-zero
5. Turn off the scale. Press [OFF] to turn off the scale

Galibration:
[ Note: to ensure weighing accuracy， please calibrate the scale before each use]
1. Turn on the scale by pressing [ON] for 2 seconds until 0.000 appears
2. Press and hold [ON] again for 5 seconds until "0" appears， then release it
3. Put the 20g or 50g weights on the scale. About 3 seconds later， the weighing data stop blinking， and the weight is displayed. Calibration is successfully!

Caution:
1. Please make the calibration steps as the user manual. Once you step to error programs， the scale can not work properly any more
2. Put the scale on a vibrationless， calm， no electromagnetic interference， solid plat surface. Keep the scale out of your mobile over 50cm
3. Do not overload. Once overloading， the scale display "FULL"
4. Do not impact the scale salver. To avoid damage the load cell
5. When "o" appears up， you can read the weighing data
6. When "Lo" is display， please replace the batteries. Working temperature is 5~35℃. To ensure accuracy of this equipment， allow the scale to remain at a constant temperature for at least 30 minutes before use. Then do the calibration
7. To avoid future malfunctions， do not dismantle this product. Please store carefully

Package Content:
1 x 30g x 0.001g Digital Portable Jewelry Scale ( Batteries Not Included )