Ledlenser MH10 USB Rechargeable LED Headlamp, 600 Lumens

Light Functions:  
Power - high light output for every situation 
Low Power - economical light for long battery life, glare-free reading and working 
Mid Power - medium light output for every situation 

Special functions: 
Rear Light - a red back light so that you can also be seen from behind 
Transportation Lock - prevents the light from being turned on inadvertently 

Switches: 
Front Switch - a switch on the head of the flashlight so you can use one hand 

Energy Management: 
Low Battery Warning - it warns you when the battery is low 
Charge Indicator - it shows the current charge status of the battery 

Rechargeable:  
By using rechargeable batteries, you're not just protecting your wallet, but also the environment. Regular batteries, after all, require up to 500 times more electricity to produce than they can release themselves. Combined with the energy consumption for transport and storage, the CO2 emissions are huge.