1. Material: ABS, acrylic lens 2. Purpose: reading for the elderly, jewelry appreciation, maintenance, etc. 3. Multiples: 2.5 times for the primary mirror and 13 times for the secondary mirror 4. Battery capacity: 1200mAh 5. Light source: 29 LED lights 6. Charging port: USB 7. Features: high-definition lens, with 29 LED ring lights, three-speed touch switch, adjustable light brightness, to meet the needs of different occasions, contains rechargeable batteries, durable 8. Lens diameter: the primary lens is about 108mm, the secondary lens is about 25mm 9. Size: about 26.5x12.7 cm 10. Weight: about 187 grams