1. Material: aluminum alloy 2. Switch: push switch 3. Bulb: XPG+COB, LED white light+red light 4. Charging method: hidden USB charging at the tail 5. Battery: A has built-in 1500mAh, B has built-in 800mAh 6. Gear level: 5 gears, XPG strong light-XPG weak light-COB white light-COB red light-COB red light flash 7. The head can be folded 90 degrees 8. Strong magnetic tail, 360-degree adjustable 9. Hidden USB charging 10. Headlamp, flashlight, work light three-in-one 11. Dimensions: A 17x2.8x2.8 cm, B 13.5x2x2 cm 12. Net weight: A 207 grams, B 105 grams