[Product Name] Mini Winnie mute frequency Tiaodan 

Senior Product Material ABS 

Frequency vibration modes [10] 

[] Less than 35 db maximum noise 

Product specifications Tiaodan length 65mm， maximum diameter of 16mm 

[Power] 3 LR44 button batteries (included) 

[Use] button at the bottom of a key to open and then close the inverter Press