Sena R2 Moutain Bike Helmet Polaris Accessory Collar features a sturdy zinc

Collar features a sturdy zinc alloy D-ring for tag and leash attachment and a secure plastic side release buckle for easy one-handed quick release

Touchscreen compatible fingertip

featuring an integrated quick release/locking system closure

injected shin guard

Carry handle

Sena R2 Moutain Bike Helmet Polaris Accessory Collar features a sturdy zincSena R2 Moutain Bike Helmet The R2 is an aerodynamic Smart Cycling Helmet designed for road cyclists. The R2 features a Bluetooth Intercom communication system for rider to rider conversation, plus smartphone pairing for music, GPS, cues from fitness apps, and more. The R2s impressive featureset is a nod to Senas original R1 smart helmet, but the R2 takes things to the next level with a new design and an integrated taillight. The R2s Features: