Is Smart Device : no Power Source : DC Is Batteries Required : No Is Batteries Included : Yes Light Source : LED bulbs Wattage : 7W Certification : none Origin : Mainland China Certification : none Item Type : Book Lights Stepless Dimming 24 Modes The reading light has 3 color temperatures(1600k to 6000k) x 8 brightness settings (Low, Medium, High), 24 modes in total, can adjust the brightness infinitely, with maximum brightness 100lm and you can always find the light you want! The double lamp head illuminates evenly, without flicker and glare, and does not hurt the eyes. Let it accompany you to read, work, study, sew, sleep and more. More Flexible The upgraded 360º bendable silicone gooseneck table lamp lets you place the light wherever you want. The dual headlights are 180° adjustable to narrow down the illumination range when your partner is asleep, positioning and focusing the light exactly where you want it to enjoy your reading without disturbing your partner or roommate time. Long Battery Life Built-in 1000mAh rechargeable battery, so you can read or work non-stop with it. The reading light only charges for 2.5 hours using the USB cable (included). The total service life is up to 100,000 hours. It also has a low battery reminder function to remind you to charge in time. Larger Lighting Range With 14 LEDs + double head adjustable design, it lights up 3 times wider area than regular regular 10LED lights, illuminating the full 2 pages of your book of common size. Stable & Portable The adjustable clip has a maximum opening of 1.5 inch(4cm) and is wide enough to be fixed in various objects. The clip has a non-slip pad inside to protect your beloved book from scratching or pinching and provides a secure and stable grip. It can also be placed on your desk or desk. Only 110g, this book light is easy to carry, suitable for travel, and can also be used as a night light to help you walk safely when you wake up at night.