Used several times for tent camping. I think it's the old micro USB type? The analog look is the best. ■ Ultra-Lightweight Rechargeable Headlamp NU25 The NITECORE NU25 is an ultra-compact headlamp that fits in the palm of your hand. It uses a built-in lithium-ion battery and weighs only 28g, yet it achieves a maximum brightness of 360 lumens and a long runtime. It is equipped with three types of LEDs, allowing for use in various situations. The main white light has four brightness levels: LOW - MED - HIGH + TURBO. The beam is focused for a headlamp, illuminating a wide area from your feet while also shining several meters ahead. The MED mode, which provides sufficient light for walking at 38 lumens, allows for 8 hours of illumination. This ensures ample activity time. The sub-warm white LED is 20 lumens. It emits a soft, wide beam that doesn't cause glare even when illuminating your hands. It also has high color rendering, making it useful for reading maps, observation, and meals. The red LED has three modes: LOW, HIGH, and slow flash. LOW provides just enough dim light for stargazing and reading text. HIGH and slow flash are bright enough to be used as a bicycle taillight. LEDs: Main white: CREE XP-G S2, Sub-warm white LED, Sub-red LED Brightness (Main) Turbo / SOS / Beacon: 360 lumens, Hi: 190 lumens, Med: 38 lumens, Low: 1 lumen Brightness (Warm White) 20 lumens Brightness (Red) Hi: 13 lumens, Low: 0.9 lumens Runtime (Main) Turbo: 30 minutes (theoretical), Hi: 5 hours, Med: 8 hours, Low: 160 hours Runtime (Warm White) 6 hours 15 minutes Runtime (Red) Hi: 7 hours 45 minutes, Low: 68 hours Width x Height 55.5 mm × 35 mm Body Material Resin Weight Approximately 28 g (including battery) Protection Grade Drop resistance: 1m, Waterproof IP66 Battery Built-in lithium-ion battery Accessories Headband, Micro USB cable