Sizing Guide is below - Please BE SURE to compare HEAD CIRCUMFERENCE TO SIZE CHART BEFORE ORDERING
SENA C1 SMART HELMET
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.
C1 Smart Cycling Helmet
RIDER-TO-RIDER INTERCOM
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.
BUILT-IN TAILLIGHT
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.
FINISHING TOUCHES
The Sena C1 is safety-certified and designed with a spin lock retention system for a secure fit tailored to the user’s preference. The helmet features a smooth nylon chin strap, which the speakers are affixed to. The C1 has an impressive 19 vents for maximum airflow and is lined with breathable and removable lining.
ENERGIZE YOUR RIDE WITH SENA APP
Simply pair one of your Sena helmets or communication systems with the Sena Cycling App for quick setup and easy management. You can pair/connect your device through the Bluetooth settings menu on your mobile phone. The Sena Cycling App is compatible with Sena's helmets and communications systems for cyclists.
SIZE and COLORS
The Sena C1 comes in sizes MEDIUM and LARGE in colours Matt WHITE and Matt GREY.
SIZING GUIDE
Medium (M) - 54-58cm
Large (L) - 58-61cm
How To Measure
1. Wrap a soft, flexible measuring tape horizontally around your head 1 inch above your eyebrows and ears. Pull the tape softly snug, read the length and repeat for accuracy. Use the largest measurement.
2. Select the helmet size that is closest to your head measurement from the Sizing above.

