Overview

The Sena M1 is a Bluetooth-enabled mountain-bike helmet that combines certified protection with integrated communication and audio. Designed for riders who want to stay connected on the trail — whether chatting with friends, listening to music, or getting GPS directions — the M1 delivers comfort, safety, and convenience in one rugged package.

Communication & Connectivity

4-way Bluetooth intercom — lets up to four riders connect and communicate directly while riding together.
Intercom range up to ~900 meters (approx. 0.5 miles) in open terrain — great for group rides on trails.
Built-in speakers and recessed microphone with noise-control audio — stream music, get navigation, or chat with other riders without blocking ambient trail sounds or using earbuds.
Smartphone connectivity — pair via Bluetooth to take calls, use GPS navigation audio, or listen to music and ride apps through the helmet audio system.

Helmet Shell & Safety Features

In-mold polycarbonate outer shell with EPS liner — meets standard helmet safety certifications for cycling use.
Sizes: Medium and Large (fits head circumferences from ~55 cm to ~63 cm) — adjustable spin-lock retention and chin strap for secure, comfortable fit.
Integrated LED taillight — adds visibility for dusk, low-light rides, or group rides on shared trails or roads.
Ventilation system and comfortable padding — designed for trail riding and extended use while carrying electronics.

Performance, Battery & Usage

Helmet weight around 430 g (size M) — balances structured protection with built-in tech and comfort.
Battery and electronics support intercom, calls, audio — talk or audio time long enough for standard trail rides or commutes.
Quick charging capability; helmet remains functional for intercom and audio after recharge — convenient for regular riders or commuters.

Why Riders Choose M1

The Sena M1 is especially appealing for: mountain-bike riders, e-bike users, commuters on mixed terrain, or small groups riding together. It’s ideal for riders who want trail-ready protection but also the convenience of phone connectivity, music, navigation, and communication — all without bulky headsets or external attachments. As a helmet built for both safety and social/utility tech, the M1 bridges the gap between traditional helmets and “smart” cycling gear.