Long battery service life, built-in 300mAh rechargeable battery, with usage time of 120min and a fast charging time of 80 minutes, helping you enjoy your creativity Multiple compatible interfaces, cold boot opening+1/4 screw holes, suitable for various devices, can be installed with this product to meet your selfie or regular needs Strong attraction, built-in easy to adsorb, without need for complicated installation, and enjoyable creation Comes with double-sided adhesive tape, thoughtfully design for easy use, flexible attachment, and meets needs 3-speed freely adjustment, button 3-speed dimming, light and dark as you like, soft and not dazzling