Features: 1.Insert the battery into the power connector of the trimmer. 2.Turn on the power button, the LED indicator will turn green, and the buzzers will beeps once. Click the trigger twice and the blades will automatically open. 3.Close the blades: keep pressing the trigger for 6 seconds, after hearing the buzzing sound, the blades will remain closed. 4.Before operation, in order to check the performance of the trimmer, please press the trigger once to close it, and then release the trigger to open the blades without cutting anything. Trys a few times. 5.100%authenticif you have any questionsplease contact us Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Description: 1. Product name: thimbles finger cot 2.SizeS:Length: 3.7cm, Outer diameter 2.9cm M:Length: 4.1cm, Outer diameter : 3.2cm L:Length: 4.3cm, Outer diameter : 3.5cm includes: 1 xThimbles