The Momentum Bluetooth Integrated Full-Face Helmet Sena has been at the forefront of Bluetooth innovation for the motorcycle industry for years and is breaking new ground with our first of a kind Bluetooth integrated full-face helmet, Momentum. Sena has engineered this helmet from the ground up and for the first time riders will be able to hear our industry-leading technology the way it was meant to be heard, the ideal integration of Sena’s technology creates an unrivaled audio experience. Momentum puts our top of the line and proven 20S technology inside a sleek and safe fiberglass shell. This state of the art helmet was created with riders in mind and is preinstalled and ready to ride straight out of the box. Optimal speaker position combined with our Advanced Noise Control technology allows riders to effortlessly take and make calls, listen to music through their phone or the built in FM radio, audio multitasking, hear turn-by-turn GPS directions, and even chat through the built-in intercom with up to 8 other riders at a distance of up to 1.6 km (1 mile). General Talk Time: Momentum: 20 hours Weight: Momentum: 1,690 g (59.61 oz) (M size) Helmet Shell: Composite Fiberglass Shell 2 shells Visor: Quick release system Scratch resistant UV resistant Pinlock ready Comfort: Removable & washable Breathable Quick dry liner Laser-cut foam Chin curtain Breath deflector Security: Double D-ring Reinforced chin strap Reflective safety patch Multi-density EPS Neck Roll Ventilation System: Top vent Chin vent Exhaust port Bluetooth Bluetooth 4.1 Headset Profile (HSP) Hands-Free Profile (HFP) Advanced Audio Distribution Profile (A2DP) Audio Video Remote Control Profile (AVRCP) Intercom Working distance: up to 1.6 km (1.0 miles) in open terrain Audio Advanced Noise Control™ Built-in SBC Codec Wide volume control Sample rate: max. 48 kHz (DAC) FM-Radio Built-in FM radio with RDS AF (Radio Data System Alternate Frequencies) Radio region: worldwide Radio frequency specifications: 64 ~ 108MHz 10 preset station memory with automatic scan function Battery Charging time: 2.5 hours Lithium Polymer Battery Certificates Electronics: FCC, IC Helmet: DOT, ECE Note Please note that as long as nothing else is written in the article description, all helmets that have a visor as standard will be delivered with a clear one, even if it is shown differently.