Product Features: 1. This is a portable mini pen cap light, powered by 1 AAA battery. The textured pattern design on the barrel is stylish and ergonomic. 2. Single-mode circuit with a boost constant current driver for consistent brightness. 3. Tail button switch provides easy and comfortable operation. 4. A copper ring is embedded at the junction of the black barrel and tail cap, creating a balanced and elegant appearance. 5. Dual-purpose clip design functions as both a pen clip and cap clip, suitable for various uses. Product Technical Parameters: - LED lifespan: 100,000 hours - Maximum brightness: 120 lumens - Effective range: 80 meters - Input voltage: 0.83.7V - Operation mode: 1 mode (high) - Driver type: Constant current driver for steady brightness - Power source: 1 x AAA or 10440 lithium battery - Battery life: Varies based on battery capacity - Product dimensions: 13.5 x 1.5 cm - Weight: 18g (without battery) - Switch type: Tail press switch - Body material: Aluminum alloy - Lens material: Optical lens - Surface finish: Hard anodized and wear-resistant coating - Waterproof rating: IPX6 - Impact resistance: 3 meters - Color: Black - Package includes: 1 x Light (batteries not included) Note: Measurements are manually taken; please allow slight variations. Due to lighting and screen differences, actual color may vary slightly. Item received may differ slightly from image shown.