Overview

The Magene S3+ is a dual-mode wireless sensor that tracks your cycling speed and cadence with precision. Built as the upgraded successor to the GEMINI 200, it lets you switch between speed sensor and cadence sensor modes simply by reinstalling the battery, so one compact device covers both of your key training metrics.

Thanks to its geomagnetic sensor chip, the S3+ delivers accurate readings without any external magnets to align or lose. It pairs over both ANT+ and Bluetooth, making it a reliable companion for a wide range of GPS bike computers and smartphone training apps.

Lightweight, compact and easy to mount, this sensor is a smart upgrade for riders who want dependable data on every ride without adding bulk to their setup.

Key Features

• Brand: Magene
• Model: S3+
• Data: Speed and cadence
• Sensor: Geomagnetic sensor, no external magnets required
• Connectivity: ANT+ and Bluetooth dual protocol
• Battery Type: Coin cell (battery included)
• Weight: 9 g with battery
• Working Temperature: -20 to 50 degrees Celsius
• Dimensions: 8.85 x 29.8 x 38.3 mm
• Certification: CE

Highlights

• ✓ One sensor covers both speed and cadence, switch modes by reinstalling the battery
• ✓ Magnetic-free geomagnetic design means no magnets to mount, align or lose
• ✓ Dual ANT+ and Bluetooth support works with most GPS computers and training apps
• ✓ Can connect to two devices on different protocols at the same time for multiple records of a single workout
• ✓ Compact and lightweight at just 9 g, so it stays out of the way on the bike

Usage

Mount the S3+ on your hub or crank arm and pair it with your bike computer, smartwatch or phone app to log speed and cadence data. It is suited to road cyclists, commuters and indoor trainers who want consistent, accurate ride metrics.

In the Box

• Magene S3+ speed and cadence sensor
• Battery
• Mounting accessories