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 3-speed freely, button 3-speed dimming, light and dark as you like, soft and not dazzling Strong attraction, built-in, easy to adsorb, without need for complicated installation, and enjoyable creation Extremely lightweight, weighing only 20g, portable and small size, every happy moment in life 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