ZebraLight H31w XP-G Neutral White CR123 Headlamp Automatic Countdown range: 1 minute to

Countdown range: 1 minute to 24 hours

Two 18650 or 18500 batteries will gives you 700 lumens

Another advantage is that the cool white LED improves the colour rendition of objects

lensatic sighting

ZebraLight H31w XP-G Neutral White CR123 Headlamp Automatic Countdown range: 1 minute toMain Features and Specifications LED: Cree XP G Neutral White (color temperature 4200 K) User Selectable Modes: 3 (High, Medium and Low). Each mode can be configured to one of the two sub levels. Light Output High: H1 189 Lm (0. 9 hrs) or H2 103 Lm (2 hrs) 4Hz Strobe Medium: M1 37 Lm (12 hrs) or M2 21 Lm (23 hrs) Low: L1 4. 3 Lm (3. 7 days) or L2 0. 43 Lm (21 days) Light output are out the front (OTF) values. Runtime tests are done using Panasonic