ECVISION LED Desk Lamp,USB Port Table Lamp With Eye Protection (Eye-Care) Energy-saving: 60% less energy cost, Eco-friendly. Flicker-free natural light, ease for eye. No mercury, No UV, No radiation, No noise Flexible Neck: Be Capable of swiveling and rotating flexibly for desired lighting angle most pianos, desks & more surfaces up to 65mm thick. Provides natural, non-flickering light for stress free productivity and enjoyment. Flexible positioning suitable for use in office, bedroom, school, and reading.