Product technical specifications
AURA 170 HB front light
- Flagship of the SIGMA AURA series
- Up to 170 lux brightness, 700 lumens and 180 m beam range
- HIGH BEAM mode, activated via REMOTE HB
- AUTO mode with intelligent brightness sensor
- LINK connectivity
- Control of LINK rear lights and RECO LINK radar rear lights
- LIGHT GUIDE for excellent side visibility
- USB-C with charging from an external battery function
- Even, non-glare light output compliant with StVZO requirements
- Dust and water resistant per IP67 protection class
- Beam range: 180 m
- Runtime: HIGH BEAM up to 2.5 h; LOW BEAM up to 20 h; AUTO mode up to 20 h, HIGH mode up to 5.5 h, MID mode up to 9 h, ECO mode up to 20 h; REMOTE HB: 1 year
- Charging time: 3 h
- Light intensity: 150 LUX (100 lux in MID mode, 50 lux in ECO mode); HIGH BEAM: 170 LUX / 700 lumens
- Charge indicator: 4-level battery charge indicator
- Integrated charging function: USB-C charging
- Short button press shows battery status
- Mode memory function
- Brightness sensor
- Side visibility
- Water resistant per IP67
- 360° adjustable 3D screw mount with quick-release system; REMOTE HB: silicone rings
- Tool-free mounting
- Protection against accidental activation: double-click to turn on
- Weight: 240 g (with mount)
- StVZO approved - does not dazzle other road users
- Battery indicator
- Dimensions (L x W x H): 45 x 110 x 45 mm; REMOTE HB: 13.46 x 36.54 x 36.54 mm
- LINK function for all compatible SIGMA LINK rear lights. REMOTE HB: LINK function for all compatible SIGMA LINK front lights
- REMOTE HB control: high/low beam control; AURA 170 HB mode control; AURA 170 HB on/off
- CONNECTING TO THE SIGMA RIDE APPPair the SIGMA RIDE app with the AURA 170 HB LINK in seconds - typically via Bluetooth. Once connected, you can check battery level, adjust light modes, assign device names and install firmware updates.
- AUTOMATIC LIGHT ADJUSTMENTThe integrated brightness sensor automatically adjusts light intensity from 50 to 150 lux. This always ensures the right lighting while extending battery life. Smart power management.
- SIMPLE CONTROLFour light modes plus HIGH BEAM ensure the right light output for every riding situation. Intuitive controls let you quickly switch between AUTO, HIGH, MID and ECO modes. Double-click activation acts as protection against accidental switch-on.
- MODE MEMORY FUNCTIONWhen switched on, the AURA 170 HB LINK automatically starts in the last used light mode. Just switch on and ride.
- ENHANCED SIDE VISIBILITYThe integrated LIGHT GUIDE improves your side visibility in traffic, increasing safety in the dark.
- FLEXIBLE MOUNTINGThe tool-free mount allows the light to be quickly attached to the handlebar. Thanks to the DUAL MOUNTING OPTION (DMO), the light can be moved to a central position below the bike computer in seconds, without rotating the light itself around its axis - the set alignment is retained.
- READY FOR ANY WEATHERDust and water resistant per IP67, ready for use at any time - whether it's raining, the road is muddy, or you're riding on dusty trails.
- LARGE-CAPACITY BATTERY. USB-CUp to 20 hours of runtime, a USB-C charging port and the ability to charge from an external battery make the AURA 170 HB LINK a reliable companion on long rides.
- ALWAYS SEE THE BATTERY CHARGE LEVELThe multi-level AURA 170 HB LINK display shows not only the light modes - a dual battery and charging indicator also always informs you of the light's battery status. When LINK products are connected, you will also see the battery level and charging status of the paired LINK rear light or RECO LINK radar rear light.
HIRO 50 LINK rear light
- LED bicycle rear light with brake light function
- Integrated emergency brake light
- StVZO approved
- Visibility up to 500 m
- USB-C charging port
- Up to 11 hours of battery runtime
- Enhanced side visibility
- Smart braking detection
- Compact design
- Tool-free mounting
- Splash-proof per IP44
- SIGMA LINK connectivity (HIRO 50 LINK)
- Visibility range: 500 m
- Runtime: up to 4 h (High), up to 11 h (Eco)
- Charging time: 3 h
- Charge indicator: three-level battery/charge indicator
- Integrated charging function: USB-C charging
- Short button press shows battery status
- 3 LED brake light function
- Side visibility
- Splash resistant per IP44
- Tool-free mounting with flexible silicone strap
- Protection against accidental activation: double-click to turn on
- Weight: 30 g (with mount)
- StVZO approved - does not dazzle other road users
- Battery indicator
- Dimensions (L x W x H): 36 x 30 x 63 mm
- Brake light functionAn integrated acceleration sensor automatically detects braking and activates the smart brake light function within a fraction of a second.
- VisibilitySafety starts with visibility. It is ensured by up to 500 m rear visibility, enhanced side visibility to help you be noticed better, and an eye-catching brake light function with integrated emergency brake light.
- LINK connection with front lightThe HIRO 50 LINK version intelligently connects the rear light with compatible SIGMA LINK front lights. Both lights can be switched on and off together, and the rear light's battery level is shown directly on the front light.
- USB-CThanks to the modern USB-C port, the bicycle rear light can be charged quickly and conveniently.
- Long battery runtimeThe integrated battery runs for up to 11 hours, making it perfect for long rides, commuting and training. A 3-level battery indicator reliably shows the current charge level.
- Brake light function benefits: smart acceleration sensor, pulsing emergency brake light, better visibility in traffic, increased safety day and night.
- The compact, modern design blends discreetly into modern bike setups while ensuring good visibility in traffic.
- LINK function benefits: connection with SIGMA LINK front lights, combined on/off switching, battery charge level indicator.
- Battery benefits: simple charging, USB-C charging port, up to 11 hours of runtime, fast charging.

