Minimalist Design Compact mounting bracket allows the lamp to be mounted onto your bed headboard, nightstand or workbench to keep your countertops clear of clutter and create the minimalist lifestyle. Flexible gooseneck design with the length of 45cm/17.7 enables you to adjust the lamp with ease and to direct the light wherever you want. 5V USB-Powered with Universal Compatibility Unlike other LED desk lamps from TROND with full brightness, TROND Halo 2W doesnt come with an external power adapter. Instead, it has the integrated 5ft-long USB cable with the Type A connector, and can be powered by any 5V USB devices, such as USB wall chargers, external battery packs, USB ports on your computer, etc. Touchable Switch & Stepless Dimmer Featuring non-button design, TROND Halo 2W is completely touch-controllable. By quickly tapping the silver lamp top, you can easily turn on or off the lamp; by long pressing for over 0.5 second, you can enable the stepless dimmer and select the right brightness to cater to you need. Even smarter, TROND Halo 2W can remember your previous brightness setting. Specifications: – Material: Premium ABS plastic & Aluminum Alloy – Power Consumption: 2.1W (max) – Total Flux: 110 ~ 130 lumen – Color Temperature: 4000K ~ 4500K (Warm White) – Lamp Head: 6.0cm / 2.36 (diameter), 1.6cm / 0.63 (max. thickness) – Gooseneck Length: 45cm / 17.7 (fully-extended) – Mounting Bracket: 1.1(height) x 0.87(width) x 0.71(depth) – Operating Temperature: -20? ~ 40? – Weight: 0.6 lb. / 0.27 kg (w/o the power adapter) IMPORTANT: This lamp doesnt include a USB power adapter in the package. Please use any USB wall charger, external power bank, or the USB port on your computer to power on the lamp.