Key benefits Flexible, reliable lighting for reading and close work: choose battery power (3×AAA, not included) or plug in via USB/DC for continuous use. The lamp automatically disables the batteries when a DC plug is inserted and returns to battery power when unplugged—press the button to resume operation. Precise, glare-free illumination: LEDs deliver brightness comparable to three common LED bulbs and are engineered to minimize flicker, shadows, and glare for comfortable reading or task lighting. Stable, adjustable positioning: high-quality metal alloy gooseneck arms hold their shape so you can aim light exactly where you need it. Main features Dual power modes: runs on three AAA batteries (package does not include batteries) or via USB/DC connection. Battery power is automatically cut off when the DC plug is inserted; when unplugged the battery will power the lamp again (press the button to turn on). Durable, flexible arms: metal alloy construction provides high flexibility and hardness, allowing full-range, multi-angle positioning and long-lasting performance. Multiple light settings: independent switches let you select different lighting combinations—single light, one light on each arm, two lights on a single arm, or all lights on both arms—so you can tailor brightness to the task. Adjustable clip: strong, adjustable clip grips items of varying thickness. A rotatable tail piece expands the range of clamping angles and improves stability on uneven surfaces. Reading-focused design: even illumination without flicker, shadow, or glare, optimized for close-up reading and detailed work. Practical applications Bedtime reading: clip the lamp to a headboard or book and direct the light without disturbing a partner. Travel and study: lightweight, adjustable clip-on lighting for reading in hotel rooms, dorms, or late-night study sessions (use batteries for portability or USB for extended sessions). Hobbies and tasks: ideal for instrument stands, sewing, model building, or any small-project work that requires focused, adjustable light. What to expect Material: metal alloy flexible arms. Power options: 3×AAA batteries (not included) or USB/DC power. Lighting behavior: multiple switch modes, no flicker, minimized shadows and glare. Clip design: adjustable grip with rotatable tail for secure attachment to a variety of surfaces. Simple controls and versatile mounting make this clip-on lamp a practical solution for readers, students, crafters, and travelers who need reliable, adjustable light without complicated setup.