Adjustable ring lightLightly press the dimmer button to change the lighting color: warm light, cool light and natural light; Press and hold the button to toggle the brightness from 1% to 100%. Meet all your needs in different circumstances. Press the button twice in a row to display the SOS flash. USB RechargeableBuilt-in 200mA polymer lithium battery. Battery life: 60 minutes in single light mode, 30 minutes in dual light mode (brightest mode). The rechargeable battery with a USB cable (included) does not require the frequent purchase and replacement of disposable batteries. Multifunctional Selfie LightThis ring light helps to brighten your face and improve the surrounding lighting for a perfect selfie. When you are in a dark environment, it can be used as an emergency light to illuminate the environment. Portable and easy to useProduct size: 9 x 9 x 3.1cm, laptop lights do not take up too much space in your bag. Just clip it to the top of your smartphone or tablet to capture high quality images and videos for every important moment of your life Compatible with all smartphonesThe allowable thickness range of the clip mouth is between 0-15mm. This is suitable for most phones and laptops.