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Patented, road traffic regulations-compliant high-tech wristbands for maximum safety on your bicycle. Comes with a protective case and power adapter.
- 360° visibility through turn signals, brake light and lighting with ultra bright LEDs.
- Optimal stability through gesture-control and sensor activation.
- One-of-a-kind navigation through vibration in the armbands with the free Flasher App.
- Convenient. No cabling, no remote, no mounting.
Learn more
Get 30 days of komoot Premium for free with every Flasher Set.
Flasher and navigation can also be used free of charge without komoot.
Product specifications
- Flasher Duo
- One size fits all: width: 5,0 cm | external diameter: 8,5 cm
- for arm cirumferences between 21-38 cm
- fits children ages 8 and up
- Weight: 145 g per armband
- Battery: 2x 3,7 V 735 mAh Li-ion
- Battery life: 8h in night mode, 4h in jogging mode, 4h in emergency mode
- Charging time: rechargeable in 2h from 0% to 100%
- Water resistent: with watertight USB-C charging port (no cover required)
- Case
- Size: Diameter: 14,0 cm | Height: 8,0 cm
- Weight: 125 g
- Charger
- Size: Length: 8,0 cm | Width: 3,4 cm | Height: 2,1 cm
- Weight: 37 g
- Output: DC 5,0 V | 2,0A | 10,0W Max
- Charging cable
- Type: USB-A to USB-C
- Version: Y-Splitter cable, i.e. 2x USB-C to 1x USB-A
- Length: 53,5 cm
- Weight: 22 g
What you get
- 1x Flasher Duo (two high-tech armbands)
- 1x Flasher Case that fits both armbands
- 1x Flasher charger for optimized charging
- 1x USB-C to USB-A Y-Splitter cable to charge both armbands at the same time
- free Flasher App access
- 🎁 RIGHT NOW: 30 days komoot Premium access free with every order
Certifications
- Complies with all applicable European Union directives (including 2014/53/EU-RED and 2011/65/EU-RoHS). All certifications were carried out in cooperation with an accredited certification body in Germany.
- Multiple international patents

5-year warranty
30-day return policy
Free Shipping
Let customers speak for us
The most brilliant turn signal of your life
Become visible.
Stay stable.

Innovative turn signal for day and night. Ultimate safety when turning.

Lighting at eye level, all around the body. Visibility in every situation.

Unique navigation through vibration on the arms. Intuitive. Stress-free.

High-tech sensor based brake light. Protection during dangerous times.
Be seen.
Prevent falls.
Arrive safely.
Swing your elbow to the side to activate the turn signal. Your hands stay on the handlebars, while traffic around you knows, where you are going. Always in control, visible from a distance, and with many other features.
Flasher Set –
a guided tour
Smart navigation
Now also with komoot
"Navigation through vibration" is a free feature of the Flasher armbands, which you can set up via the free Flasher app.
How the navigation system works
1. Plan your route
Plan your route in the free Flasher app, using komoot, Google Maps or Apple Maps, and start navigation.
2. Put your phone away
From now on, you won't need a screen or headphones that would distract you. Keep your phone in your pocket and your eyes on the road.
3. Let the vibrations in the armbands guide you
The left or right armband vibrates when you need to make a turn – one time a short distance before the turn and two times immediately before you have to turn. The vibration motors are so strong that you can feel the signals even through a thick jacket.
All that glitters is not gold.
FAQ
How do I turn the blinker on and off?
Activation of the turn signal happens with a simple swing of the elbow. Just move it quickly upwards without letting go of the handlebars. This way, both hands can remain on the handlebars throughout the entire ride.
Do the armbands stay on even on bare skin or if I sweat?
Yes, the armbands stay right where they are, even on your bare upper arm or if you sweat. Thanks to the non-slip silicone, they remain securely on your arm. For optimal comfort, wear them close to your elbow, just above the bend.
How does the navigation through vibration work?
Plan your route in the Flasher app – using komoot, Google Maps, or Apple Maps – and start navigation. The armbands vibrate during your ride before you need to turn. If the left armband vibrates, turn left, if the right one vibrates, turn right.
This way you can focus on the road and traffic and won't be distracted by your phone or navigation screen.
How much does navigation through vibration cost?
Vibration navigation is free, regardless of which navigation service you use. To use it, all you need is the free Flasher app. Download it from the App Store and on Google Play.
For navigation, map data from the following providers can be used:
- komoot
- Google Maps or
- Apple Maps
🎁 For a limited time only:
Currently, we're gifting you 30 days of komoot Premium for free along with every purchased Flasher Duo or Flasher Set. The komoot terms of service for free trials apply. You can find more information on the official komoot website.
Do drivers understand the turn signals and brake light?
Yes, because we use the same signals as all other vehicles on the road (yellow for turn signals, red for brake lights, red/white for headlights and taillights). A particularly valuable feature is that, similar to cars, the lights are mounted at your outermost points. This makes the turn signal especially clear and obvious and prevents mixups of left and right signalling.
Can Flasher be used on public roads?
Flasher is compliant with all relevant electronics certifications in the EU. Regarding use in your specific country, make sure to carefully read the regulations that apply to you. Many EU countries, like Sweden, Denmark or Germany, contain a passage permitting the use of blinkers on bicycles – at the very least alongside arm signals, which improves visibility of the signal in darkness or bad weather conditions.
Do the armbands also work without an app?
Absolutely! Flasher can also be used without the Flasher app.
The three modes (night mode, jogging mode and emergency mode) as well as the turn signal and brake light are fully functional, completely without any app.
The free app allows you to customize the settings of the armbands (increase brightness, make the turn signals more sensitive, etc.). The app is required to enter the destination when using the "navigation through vibration" feature.





