Light Ring AdjustmentEasily press the dimmer button to change the light color: warm light, cold light and natural light; Hold the button to switch the brightness from 1% to 100%. Meet all your needs in different circumstances. Press the button twice in a line to display the SOS flash. Charge by USBBuilt-in 200mm lithium polymer battery. Battery life: 60 minutes in single light mode, 30 minutes in double light mode (brightest mode). The battery with USB cable (included) does not require the frequent purchase and exchange of disposable batteries. Multifunctional Selfie LightThis ring light helps illuminate your face and improve ambient lighting for the perfect selfie. If you are in a dark environment, it can be used as an emergency light to illuminate the area. Servant and easy to useProduct size: 9 x 9 x 3.1 cm, the LED rings won't take up too much space in your pocket. Simply add it to the top of your smartphone or tablet to record high quality photos and videos for every important moment in your life Compatible with All Smartphones The allowable thickness area of the terminal opening is 0-15mm. It works for most phones and tablets. Like iPhone XR/iPhone XS/iPhone 8/8 Plus/Sony/Huawei and other cell phones, iPad and even MacBook. Light Brightness Adjustment: - Lightly press the button to change the light color. -Prouse the button for a long time to easily adjust the brightness. -Toppel Click SOS Flash. Specifications: Material: ABS+PC Size: 9*9*3.1cm LED number: 20 pieces white LEDs + 20 pieces warm LEDs Light color: warm light, cold light and natural light Battery capacity: 200mAh Charging voltage: 5V / 1A Maximum clamp thickness: 0.59 inches Color temperature: 3200K-5600K Note: Please cut off the electricity after fully charged (although there is overcharge protection, it is still recommended to turn off the electricity after being charged). Applicable: Most digital devices (not covered) up to 0.59 inches thick. Charge the selfie ring before using it for the first time. If you don't always use the selfie light. To protect the built-in battery, please charge it once a month.