{"product_id":"bryton-smart-speed-sensor-magnetless-ant-bluetooth-270-hour-battery","title":"Bryton Smart Speed Sensor – Magnetless, ANT+ \u0026 Bluetooth, 270-Hour Battery","description":"\u003cp\u003eThe \u003cstrong\u003eBryton Smart Speed Sensor\u003c\/strong\u003e is a compact, magnetless hub-mounted speed sensor that measures wheel rotation and transmits speed and distance data wirelessly via \u003cstrong\u003eANT+ and Bluetooth 4.0\u003c\/strong\u003e to compatible bike computers, smartwatches, and smartphones. Hub-mounted speed sensors provide more consistent and responsive speed data than GPS alone — particularly at low speeds, during acceleration, in tunnels, and in urban environments where GPS signal can be degraded. The Bryton speed sensor makes this data available on any ANT+ or Bluetooth-enabled device without the complexity of magnet-based sensors.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003emagnetless design\u003c\/strong\u003e detects wheel rotation directly without needing a separate magnet on the spoke, making installation straightforward on any wheel size. Additional holes for cable ties ensure a secure, rattle-free fit on the hub. The \u003cstrong\u003eCR2032 battery\u003c\/strong\u003e provides up to \u003cstrong\u003e270 hours of active use\u003c\/strong\u003e and 300 days of standby — a widely available, inexpensive cell that takes seconds to replace. The sensor is waterproof to \u003cstrong\u003eIPX7\u003c\/strong\u003e (1 metre for 30 minutes) and operates in temperatures from \u003cstrong\u003e-10°C to 60°C\u003c\/strong\u003e, making it suitable for all-weather and all-season riding. It's the same speed sensor included in the Sensor Bundle variants of the \u003ca href=\"\/products\/bryton-rider-650-gps-unit\"\u003eRider 650\u003c\/a\u003e, \u003ca href=\"\/products\/bryton-rider-s510-gps-unit\"\u003eRider S510\u003c\/a\u003e, and \u003ca href=\"\/products\/bryton-rider-s810-gps-unit\"\u003eRider S810\u003c\/a\u003e, available here as a standalone sensor for riders who purchased the Device Only variant or want a replacement. For cadence data, the \u003ca href=\"\/products\/bryton-smart-cadence-sensor\"\u003eBryton Smart Cadence Sensor\u003c\/a\u003e is available separately.\u003c\/p\u003e\n\n\u003cp\u003eBrowse the full \u003ca href=\"\/collections\/bryton\"\u003eBryton range\u003c\/a\u003e or our \u003ca href=\"\/collections\/computers-gps\"\u003ecomputers and GPS collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It's Good For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMagnetless speed measurement — no magnet alignment required, fits all wheel sizes\u003c\/li\u003e\n\u003cli\u003eMore consistent speed data than GPS — better at low speeds, acceleration, in tunnels, and urban environments\u003c\/li\u003e\n\u003cli\u003eANT+ and Bluetooth 4.0 — compatible with most bike computers, smartwatches, and smartphones\u003c\/li\u003e\n\u003cli\u003e270 hours active battery life on a standard CR2032 cell — 300 days standby\u003c\/li\u003e\n\u003cli\u003eIPX7 waterproof — suitable for all-weather riding\u003c\/li\u003e\n\u003cli\u003eOperates from -10°C to 60°C — suitable for all-season use\u003c\/li\u003e\n\u003cli\u003eStandalone purchase for Bryton Device Only buyers or as a replacement sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It's NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCadence measurement — this is a speed sensor only; for cadence data, the \u003ca href=\"\/products\/bryton-smart-cadence-sensor\"\u003eBryton Smart Cadence Sensor\u003c\/a\u003e is available separately\u003c\/li\u003e\n\u003cli\u003eDevices without ANT+ or Bluetooth 4.0 support\u003c\/li\u003e\n\u003cli\u003eSustained water immersion beyond IPX7 rating\u003c\/li\u003e\n\u003cli\u003eOperation outside the -10°C to 60°C temperature range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it compatible with non-Bryton devices?\u003c\/strong\u003e\u003cbr\u003eYes — the sensor transmits via standard ANT+ and Bluetooth 4.0 protocols, making it compatible with the vast majority of bike computers, smartwatches, and cycling apps that support speed sensors, including Garmin, Wahoo, and others. It is not limited to Bryton devices.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy use a speed sensor if my bike computer already has GPS?\u003c\/strong\u003e\u003cbr\u003eGPS speed can be unreliable at low speeds, during rapid acceleration, in tunnels, in urban environments with tall buildings, and indoors. A hub-mounted speed sensor measures wheel rotation directly, providing more consistent and responsive speed data in these situations. Many cyclists use both GPS and a speed sensor together for the most complete and accurate data.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does a magnetless speed sensor work?\u003c\/strong\u003e\u003cbr\u003eTraditional speed sensors use a magnet on the spoke and a sensor on the chainstay that detects each magnet pass. Magnetless sensors use an accelerometer inside the sensor unit to detect the rotation of the hub directly, without needing a separate magnet. This makes installation simpler — just attach the sensor to the hub with the included cable ties, enter your wheel circumference in your device settings, and pair via ANT+ or Bluetooth.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this the same sensor included in the Bryton Sensor Bundles?\u003c\/strong\u003e\u003cbr\u003eYes — this is the same Smart Speed Sensor included in the Sensor Bundle variants of the \u003ca href=\"\/products\/bryton-rider-650-gps-unit\"\u003eRider 650\u003c\/a\u003e, \u003ca href=\"\/products\/bryton-rider-s510-gps-unit\"\u003eRider S510\u003c\/a\u003e, and \u003ca href=\"\/products\/bryton-rider-s810-gps-unit\"\u003eRider S810\u003c\/a\u003e. If you purchased the Device Only variant and want to add GPS-independent speed tracking, this is the sensor to buy.\u003c\/p\u003e","brand":"Bryton","offers":[{"title":"Black","offer_id":46564292886703,"sku":"BR561104000069","price":19.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/51440-pm.jpg?v=1770988226","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/bryton-smart-speed-sensor-magnetless-ant-bluetooth-270-hour-battery","provider":"Swinnerton Cycles","version":"1.0","type":"link"}