Ride together. Hear everything.

The Cardo Sync is built for cyclists who want to stay connected to their group, their music, and their phone without blocking out the road. Open-ear audio keeps both ears unobstructed so you stay fully aware of traffic and surroundings while communicating clearly with up to 30 riders via cellular VoIP intercom — no mesh network, no range ceiling, just your cellular coverage. Four custom sound profiles are engineered specifically for open-ear cycling, with wind noise reduction, ambient noise optimization, and automatic gain control that adjusts volume as your speed changes to keep audio consistent from the valley to the summit. Shimano Di2/STEPS connectivity adds remote control and voice prompting of critical drivetrain announcements directly through the Sync. A hook-and-loop mount integrates with most open-face cycling helmets and all eyewear in seconds. Auto on/off powers the unit down when you stop and back on when you move to extend battery life across the full ride. IP54 water resistance handles rain and road spray, and 11 hours of talk time on a single charge covers your longest days in the saddle. At 0.67 oz per side, you will not feel it on your helmet.

Features

• Cellular VoIP intercom connects up to 30 riders with unlimited range wherever cellular coverage is available, powered by the free Cardo Connect app with no subscription required
• Open-ear design keeps both ears completely unblocked so you stay aware of traffic, road conditions, and surroundings throughout the entire ride
• Four custom sound profiles engineered for open-ear cycling deliver balanced audio with wind noise reduction, ambient noise optimization, and automatic gain control that adjusts volume as speed changes
• Shimano Di2/STEPS connectivity enables remote drivetrain control and voice prompting of critical system announcements directly through the Sync
• Auto on/off powers the unit down when stationary and back on when movement is detected, conserving battery without any manual intervention across stop-start rides
• Hook-and-loop mount is compatible with most open-face cycling helmets (minimum 7.5 cm strap length) and all eyewear, and IP54 water resistance covers rain and road spray across all-weather rides

Specs

• Best Use: Road Cycling, Gravel Cycling, Mountain Biking, Group Rides
• Intercom Technology: Cellular Intercom / VoIP (requires phone, Cardo Connect app, and active cellular service)
• Max Group Size: 30 users
• Range: Unlimited (cellular coverage required)
• Shimano Connectivity: Di2/STEPS system
• Audio: 4 custom cycling-specific sound profiles
• Audio Processing: Wind Noise Reduction, Ambient Noise Optimization, Automatic Gain Control
• Waterproof Rating: IP54
• Talk Time: Up to 11 hours
• Charging Time: Up to 2.5 hours
• Fast Charge: 2 hours talk time after 20-minute charge
• Battery Type: Lithium Polymer
• Bluetooth: 5.4
• Voice Prompts: 11 languages supported
• Auto On/Off: Yes
• Helmet Compatibility: Most open-face cycling helmets (minimum strap length 7.5 cm)
• Mount Type: Hook and loop fastener
• Eyewear Compatibility: All eyewear
• Operating Temperature: 14 to 131 F (-10 to 55 C)
• Dimensions (each unit): 1.01 in H x 2.82 in L x 0.48 in D (25.7 x 71.7 x 12.2 mm)
• Weight (each unit): 0.67 oz (19 g)
• Warranty: 2 years on unit; 1 year on battery and accessories
• In the Box: Left and right Sync units, double USB C2C charging cable, wind shield attachment
• Available As: Single (PEL0010002) | Duo (PEL0020003)