Cardo Sync is an open-ear, true wireless cycling communication systems offering effortless connectivity for riders to other riders and their phone for calls & music. It is powered by VOIP technology for Cellular Intercom communication, requiring a cellular network and the Cardo Connect app for full functionality.

Cardo Sync makes staying connected with your group completely effortless. Say goodbye to shouting over the wind or constantly pulling over to regroup. Whether you're calling out hazards, navigating a new route, or just sharing a laugh along the way, Sync keeps the conversation smooth and clear. Plus, with premium sound quality, your favorite music and podcasts will sound incredible on every ride.

Cardo Sync delivers the best audio experience on the market—without sacrificing your situational awareness. Engineered specifically for cycling, it attaches directly to your helmet instead of sitting in or over your ears, giving you unbeatable comfort and keeping you fully aware of your surroundings. Plus, it's lightweight, incredibly easy to use, and water resistant so you can ride with confidence in any weather.

Cardo Sync is powered by our Cellular Intercom, run on VoIP technology. The range is limited only by data network coverage. So as long as you are within coverage, you can enjoy an unlimited range!

You can count on Cardo Sync to keep you connected for up to 11 hours on a single charge—more than enough power for your longest rides. While exact battery life varies based on your usage and volume levels, it's designed to last all day long.

At just 19 grams per side, Cardo Sync is so lightweight you’ll barely notice it's there—leaving you free to focus entirely on your ride.

Voice over Internet Protocol (VoIP) is a telecommunications technology that transmits audio calls over an IP network rather than traditional public switched telephone networks. It is the network technology that Sync is built on.

Yes. Cardo Sync uses Cellular Intercom technology and thus communication, music listening and phone calls are reliant on a cellular network and the Cardo Connect app for full functionality.

Cardo Sync/VeloVox VoIP group calls depend on each participant’s individual cellular data connection. Because coverage varies across mobile providers, network performance—and resulting audio quality—may differ among riders in the same area. To ensure best performance, all participants should have a stable mobile data connection with adequate network coverage.

When using the Cardo Connect app for Cellular Intercom communication, battery consumption is similar to that of WhatsApp calls. Consumption may vary based on factors such as device model, battery health, screen usage, and network conditions.

Simply set up your group using the Cardo Connect App. Once you are part of a group, just start talking, without needing to push any buttons.

Go to the Group Screen of your Cardo Connect app and click the group you wish to join. Alternatively, you can join a group by answering a request from that group. Once you join a group call, this group will become your default group.

Yes, Cardo Sync is designed to fit the different types of straps used in most open face cycling helmets. The minimum strap length required is 7.5cm.

No, you can charge the product directly using the USB-C cable provided in the box.

Yes. For peak audio quality, start playing music before joining a group conversation. In this mode, your microphone stays muted by default—press Mute to speak (music automatically pauses), and press it again to finish speaking and resume playback. If you start music after joining the group, you can speak and listen simultaneously, though music quality will be lower.

If you start playing music after the intercom conversation has already started, you can talk and listen to music at the same time. However, music quality may be reduced, and music controls such as Next Track and Previous Track will not be available.

No. Cardo Sync features an open-ear design that keeps your ears completely unblocked. This lets you enjoy your audio and communicate with your group while staying fully aware of surrounding traffic and your environment.

Cardo's Cellular intercom data consumption resembles any other voice over IP based apps (like WhatsApp and others).

Yes, the Cardo Connect App is free of charge, does not require a subscription plan and is available at the Apple Store and Google Play.

No. The L and R from a single box are paired to each other by default and cannot be taken separately.

Yes, only group participants can hear and talk to each other.

Android: Android 10 and above are supported. Older devices, for example Samsung Galaxy S7, which is limited to Android 8, are not compatible and cannot install the app.

iOS: iOS 16.0 or later is supported, as long as the device is compatible with the latest Cardo Connect app. Very old iPhone models or iOS versions are not supported.

The Wind Shield is an optional accessory designed to reduce wind noise and improve microphone performance, helping maintain clear voice communication while riding.

Yes. Cardo SYNC can be used with or without the Wind Shield, including in windy conditions. However, for optimal voice quality at higher riding speeds, we recommend using the Wind Shield.

The Wind Shield should only be installed on the left USB connector of the device. Installing it on the right side may reduce its effectiveness.

No. The Wind Shield is not recommended in extreme weather conditions such as heavy rain, snow, or sandstorms, where moisture, ice, or debris may affect its performance.

The exact speed depends on factors such as the environment you cycle in and weather conditions. However at speeds exceeding 25-30km/h (15-20mph) the Wind Shield Attachment will provide additional wind noise cancellation.

Auto On/Off is a feature that automatically powers the device on and off based on movement, helping provide a seamless riding experience while optimizing battery life.

Yes. When Auto On/Off is enabled, the device automatically wakes up when movement is detected.

If no movement is detected for 60 seconds, the device enters a low-power state. If no movement is detected for 8 hours, the device powers off completely and will not wake up automatically.

During situations such as walking with your helmet, transportation, or other transition periods, we recommend powering the device off manually to prevent unnecessary wake-ups and preserve battery life.

Yes. The Auto On/Off feature can be enabled or disabled in the Cardo Connect App:

Settings → Auto On/Off

If the device has been stationary for more than 8 hours, it powers off completely and must be turned on manually using the power button.

No. Auto On/Off is based on movement detection and is designed not to interrupt active use

Cardo Sync comes with the new Auto On/Off systems for optimal battery consumption. In addition it includes the Wind Shield Attachment for high-speed cycling.

No, but it features a suite of custom audio technologies designed explicitly for life on two wheels. You get a Cycling-Specific Equalizer for balanced sound, Wind Noise Reduction to keep calls clear, Ambient Noise Optimization to protect situational awareness, and Automatic Gain Control that auto-adjusts volume as your speed changes.

You get two years warranty on your Cardo SYNC unit and one year warranty on the battery and accessories (according to state laws).