AURA Mips E-bike certified smart helmet (NTA 8776) with Mips protection and integrated front and rear lights. Size Oval Head Shape Round Head Shape S 20.1 – 21.7 in 20.1 – 21.3 in M 21.7 – 23.8 in 21.3 – 23.2 in L 23.8 – 24.8 in 23.2 – 24.2 in Technical Specifications Weight: 15.52 ounces (440 grams) — Medium size Ventilation: 10 Fixed Vents 2x Front/Sides 4x Top 4x Rear E-bike Certifications: NTA8776, EN1078, and CPSC (Certified safe for e-bike use) Construction: * Comfort Padding: Polyester Impact Absorption: Expanded Polystyrene (EPS) Hard Shell: Polycarbonate (PC) Water Resistance: IP67 Rated (Protected from dust and water-resistant up to 1 meter for 30 minutes according to IEC standard 60529) Lights: Front and Rear (350 Lumens output) Battery: 1350mAh Solid Mode (100% Brightness): Up to 3 hours Beacon Mode (100% Brightness): Up to 15 hours Beacon Mode (50% Brightness): Up to 30 hours Hardware & External Parts: Power Button, Charging Port, FIDLOCK® Magnetic Buckle, Magnetic Attachable Brim, Fitting System Sensors: 3-axis Accelerometer, Ambient light sensor Connectivity: Bluetooth 5.0 (Connects to the UNIT 1 App) In-App Features: Crash Alert, Customizable Lights, Weather Mode, Battery Tracking, Battery Save Mode, UNIT 1 Remote synchronization, Smart Light synchronization
