The Spot 400 Octane from Black Diamond is a simple and versatile headlamp. Ideal for all your adventures! It includes the PowerTap technology that instantly switches from full intensity to a dimmed setting, this headlamp has a red LED night vision as well as several settings such as full power, dimmer or indicator. It can be switched on quickly using a two-button interface and has faceted reflectors.To recharge it, you have two options; power it using the included three alkaline batteries or with 1500 Li-ion rechargeable batteries sold separately. This gives you maximum versatility! It is waterproof and can be used under 1.10m of water for at least 30 minutes. If submerged, some water may get into the battery compartment without impairing the lamp's performance. The lockout mode prevents accidental use in your bag or pocket.