The nano mucosa suction cups are strong and and not easy to fall off. The click head suction cup is made of nano mucosa material, which has strong viscosity and good adsorption force and not fall off after long-term use. It is washable and can restore its adhesion by washing it with water after long-term use. Air mapping technology makes clicks sensitive and silent without damaging the screen. Photosensitive air mapping click technology bids farewell to traditional mechanical clicks, with zero noise and no damage to the screen. Clicking is more sensitive and stable, avoiding accidental clicks. Smart algorithm clicks randomly, equipped with a ly upgraded smart chip and artificial intelligence algorithm click technology to prevent eye fatigue caused by excessive finger clicking and long-term overuse. The built-in battery supports use while charging. Built-in polymer battery with built-in battery life. The charging port can be used at any time. Supports use while charging, 24 hours a day. Digital display design, gorgeous breathing light. Digital display shows seconds, click speed is clear at a glance, 160 million colors of breathing light are dazzling. ly upgraded smart chip, 199 adjustable gears, multiple choices, better to use. Battery capacity:400 mAh Colour:Black Material:ABS Package Contents: 1 * phone clicker host 6 * Click head 6 * Nano sticker 6 * Clip 1 * Instructions in Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.