Shed more light on the subject. The MANHATTAN USB Flex Light is ideal when working in darkened meeting rooms, airplane cabins, editing/production suites and other low-light environments or if using notebook computers without built-in lighting or backlit keyboards. The flexible gooseneck mount properly directs the beam to help limit eyestrain and avoid distracting others working nearby. Its light can be focused on a computer back panel to quickly locate ports and connect cables, peripherals and accessories. Low power requirements and bulb-free design Its dependable, bulb-free LED source with 100,000-hour estimated life and switchless activation helps provide long, reliable service without an external power supply or electrical cords. It uses less than 90 seconds per hour of battery charge to minimize demands on portable power. Easy to Install and Transport The MANHATTAN USB Flex Light is bus-powered and easily installs into any USB port or desktop/keyboard hub. Its lightweight, compact design easily fits in notebook computer cases, making it a practical mobile computing accessory. Adjusts to gently illuminate computer keyboard without disturbing others Ideal for airline cabins, meeting rooms, presentations and other low-light environments Efficient, bulb-free LED design requires minimal power and provides extended life Lightweight for travel and easily installs into any USB port — no external power needed Lifetime Warranty LED with clear lens 100,000-hour life Uses less than 90 seconds per hour of battery charge 35 cm (16 in.); 51 g (1.8 oz.) Package Contents USB Flex Light