Add communication to your next bike ride with the Sena C1 smart helmet.
The C1 is equipped with a Bluetooth® communication system, complete with speakers and a microphone.
Whether you are looking to chat with other riders or simply listen to music on your ride, the C1 will take your ride to the next level.

4-Way Intercom

Intercom Range 300 m

LED Taillight

Fitness App Compatible

Smart Intercom Pairing

Sena Smartphone Apps


The C1 features built-in 4-way Bluetooth® intercom, allowing for full-duplex communication between riders. The working intercom distance is 0.2 miles (300 m) in open terrain. Helmet-to-helmet communication allows riders to effortlessly talk to one another without having to shout or use hand signals. The C1 has a talk time of up to 10 hours or up to 6 hours with the taillight on.


The C1 features a built-in taillight, improving rider visibility on the road. With three brightness settings, you can enhance clarity in different lighting situations. The brightness settings include On, Day Flash, and Night Flash. The C1’s taillight settings can be adjusted remotely in the Sena Cycling App.


4-Way Intercom

Connect up to 4 headsets together for a group intercom conversation.

Intercom Range 300 m

Maximum distance operating within optimal conditions.

LED Taillight

Integrated rear light with three brightness settings.

Fitness App Compatible

Listen to audio feedback from smartphone fitness apps.

Smart Intercom Pairing

Pair devices through smartphone QR scanning.

Sena Smartphone Apps

Allow you to configure device settings, access the User’s Guide, and more.

Firmware Upgradeable

Keep the firmware up-to-date through the Sena Device Manager.


Meets CPSC certification.



    Weight: 390 g (M size)
    Operating Temperature: -10 °C – 55 °C (14 °F – 131 °F)
    Storage Temperature: 15 °C – 30 °C (59 °F – 86 °F)


    Size: M / L
    Color: Matte White / Matte Gray
    In-mold polycarbonate helmet shell with EPS liner
    Nylon Chinstrap


    Bluetooth 5.1
    Headset Profile (HSP)
    Hands-Free Profile (HFP)
    Advanced Audio Distribution Profile (A2DP)
    Audio Video Remote Control Profile (AVRCP)


    Working Distance: up to 300 meters (0.2 miles) in open terrain
    Supports: up to 4 riders


    Noise Cancellation: Advanced Noise Control™
    Codec: Built-in SBC Codec


    Talk Time: 6 – 10 hours (varies based on LED use)
    Charging Time: 2.5 hours
    Charging Temperature: 0 °C – 40 °C (32 °F – 104 °F)
    Type: Lithium Polymer Battery


    Electronics: CE UKCA, FCC, IC, KC
    Helmet: CE UKCA, EN 1078, CPSC 1203
    *Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older


    Electronics: 2 years
    Helmet Integrity: 2 years