for more info

https://www.skyrc.com/corner_weight_system_2021?search=%20Corner%20Weight%20System

Does not come with cellphone

Gram Accuracy In Measuring To RC Hobbyists' Satisfaction

RC cars run off the track, tip over, run with tires wore eccentric from time to time. These are the typical results of incorrect CG(Center of Gravity) due to the unbalanced four wheels. Uneven wheel weight distribution will cause the car to sway more in one direction than others. In this circumstance, the car will run unstable, difficult to control!

Specifications

Size and Weight

Dimension: 68*68*22.5mm

Net weight of each scale: 70g

Other Parameters

Rated Voltage: 2.6V-3.6V

Rated Current: <10mA@DC3V

Battery: CR2450 3V Lithium Coin Battery

Maximum weight of each scale: 2000g

Tolerance: ±3g

Resolution: ±0.1g / 0.01oz