Triple-purpose micro-electronic ruler, digital display, thickness gauge, caliper, 0 to 25 mm

[Motion Sensor Control] Features an infrared motion sensor with a 10cm detection range. Simply wave your hand in front of the LED headlamp to turn it on or off when your hands are occupied. Best gift for men, women, and Christmas.

[USB Charging and Long Battery Life] Built-in 1200mAh Li-polymer battery. This ultra-powerful LED headlamp can be fully recharged in 3-4 hours and has a maximum runtime of 15 hours in low mode and 5 consecutive hours in high mode.

[Super Bright and 4 Lighting Modes] Four different lighting options: high (210 lumens), medium (110 lumens), low (60 lumens), and SOS strobe mode for emergencies. Simply press the mode button to dim or brighten, and press and hold for 2 seconds to switch to SOS mode.

[IPX6 Waterproof and Tiltable] Designed to conquer all weather conditions, from extreme heat to freezing cold, our professional headlamp has been tested to survive heavy rain and snow. The 45° tilt adjustment makes it ideal for fishing, night hiking, running, and camping.

[Compact and Comfortable] The 60g weight is definitely a great feature for runners as it's barely noticeable on your head. Perfect for long-distance users looking for a comfortable fit. The adjustable and stretchy strap fits both children and adults perfectly.