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Theta-K, Stvzo approved headlight, 35 Lux, built-in ambient sensor, power indicator, tool free mounting. Wide arc view in front of the bike wheel toward, illuminating road conditions

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Night cyclists need both focused light so they can see obstacles on the road and a wide field of illumination so that they too, can be seen. Theta provides a solution for bicycle riders which achieves both optimal brightness and light distribution with a super-bright CREE LED. The beam is focused from the front wheel out to 50 meters in front of the bicycle, as well as being distributed in a wide arc in front of wheel, illuminating road conditions. 

Built in a smart auto sensor (SAS)  for auto brightness control depending on ambient environment. Rechargeable battery built in easy to charge via  USB cord and has a 4-level battery indicator allowing immediate identication of power status. Come with a tool free and quick-release buckle lets you take your Theta with you whenever you leave your bicycle. IPX5 approved.


  • The beam design meets German road standard.
  • Cut-off line beam design to avoid dazzling oncoming traffic and for better visibility & safety.
  • The beam includes ① Focused light from the front wheel out to 10 meters. ② Flooding light distributed in a wide arc in front of the wheel, illuminating road conditions.
  • Built in auto light sensor (Smart Ambient Sensor) for auto brightness control.
  • Power indicator shown in 4 levels allowing immediate identification of power status.
  • Built-in rechargeable battery easy to charge by USB cord.


  • Modes: Automatic & Manual (High/ low)
  • Light: CREE hi-power LED
  • Battery: 3.7V Li-Polymer rechargeable battery (1000mAh)
  • Charge: Micro USB power supply 5V
  • Charge time(approx): 3 hours
  • Run time(approx):2.5hrs (High) / 4hrs (Low)
  • Mount size: ø 22.2 - 32mm

Package includes

  • Theta-K LED Bike Light *1
  • Bracket *1
  • USB Charge Cord *1
  • User manual *1