With advancements in lense technology and battery run time, the SEO 5 is one of the best head torches for your next night-time activity. The claimed 180 lumens (one lumen is equal to one candle light) certainly brightens up the path in the darkness at full power. The run time is up to seven hours on full or 25 hours on the low-light setting. Extremely universal for any kind of sport requiring a light. The best feature is the focus which can hone in on a spot or be adjusted to give a broad beam.
Brightness and beam adjustment.The headband is light elastic, and with heavy use might stretch over time.