3 LIGHTING MODES- Whether you need ambiance during a meal or to illuminate a game of cards outdoors the 3 levels of brightness (Low-8 inner lights Medium-outer 20 bulbs High-all 28 LED s) will shed the right amount of light for you and your guests.RECHARGEABLE-This cordless lamp features 28 energy saving LED lights at 400 lumens to provide hours of illumination after dark. The portable light ring requires 3AA rechargeable batteries (not included) that can be recharged with the provided USB cord.VERSATILE USE- Constructed of durable ABS material this light can is ideal for umbrellas with center and offset poles or stored in a vehicle to be used as an emergency lamp. This rechargeable light ring sheds light just about anywhere may need it.EASY TO INSTALL- Designed to be compatible with most patio umbrellas on the market this easy to install LED lamp has a built-in clamp that automatically adjusts to the diameter of the pole and never requires tools for installation.PRODUCT DETAILS- Materials: ABS. Dimensions: 7.75 Diameter. Fits Most Umbrellas 1.8 -2.0 diameter pole. Requires 3AA Rechargeable Batteries (not included). Incudes USB Charging Cord. Color: Black.