Bikemonger says....... compliant with the notoriously strict German light regulations,

Front - Hecto Drive STVZO 40
German STVZO optimized lens with approved flood and long-range beam. High performance LED delivers 40 Lux (140 lumens) and up to seven hours of runtime. Durable, heat-dissipating CNC machined aluminium construction. Versatile strap securely fits to most handlebar shapes and sizes.

BacK - KTV Drive STVZO
Compact, high visibility safety light. STVZO lens controls light output direction. Durable, waterproof construction. Two LED system provides 11 lumens of output and up to 12 hours of runtime. Wide Angle Lens for up to 270° of visibility. Unique aero and round post compatible design. Integrated USB stick for convenient cable-free recharging.

• German STVZO optimized lens.
• CNC machined aluminium construction (front only).
• Versatile, secure strap.
• Fits most handlebars and seatposts.
• Wide Angle Lens for up to 270° of visibility (rear only).
• Integrated USB stick for cable-free charging (rear only).