Mastercool Electronic Charging Scale with Bluetooth technology (98210-BL) 
Product Description
Mastercool’s high precision charging scale accurately measures small cans of refrigerant for charging systems that need a precise charge.
Hex cylinder adapter included for easy attachment of refrigerant cylinder to scale
Specially designed for R600a and R290
Built in check valve will hold any remaining refrigerant within the 36” nylon tube
Slim design for easy storage
Two button keypad for easy operation
Unit change (grams & ounces)
One touch tare weighing function
Auto zero
Auto off automatically turns off its power if the scale is not used within 3 hours
SPECIFICATIONS:
Capacity: 176 ounces (5000 grams)
Sensitivity: 0.035 ounces (1 grams)
Charging Capability: up to 1 gram accuracy
Dimensions: 5.5 (w) x 7.3 (l) x 1.6 (h) in. (140 (w) x 185 (l) x 40 (h) mm)
Power Source: 3 x AAA 1.5v battery
Fitting: 1/4” SAE M flare fitting with check valve
98201: High Precision Charging Scale packaged in a cardboard box