XOSS X2 Heart Rate Monitor Chest Strap X2, Bluetooth & ANT+, IP67 Waterproof, 300h Battery

The XOSS X2 is a lightweight chest-strap heart rate monitor that transmits precise, real-time heart rate data over Bluetooth and ANT+ while resisting sweat and rain.

The XOSS X2 pairs with bike computers, popular fitness apps, and smart devices to deliver continuous heart rate tracking for cycling, running, yoga and other workouts. Built to work with major brands and platforms, the X2 combines an adjustable textile strap, a long-lasting sensor battery, and waterproof construction so you can train outdoors or indoors without frequent charging or interruptions.

How does the XOSS X2 connect to my devices?

The X2 supports both Bluetooth and ANT+ protocols, letting you stream heart rate to phones, bike computers and training apps simultaneously. Connection is fast once the strap is positioned properly; open your app or device’s sensor menu and look for the X2 to pair.

• Dual transmission: Bluetooth (up to ~10 m) and ANT+ (up to ~6 m)
• Compatible with bike computers including G+, Garmin and COOSPO
• Works with mainstream apps such as XOSS, Zwift and UARUN
• Wear strap snugly before attempting to pair for reliable discovery

How accurate and real-time is the heart rate data?

The X2 records heart rate in a wide range and updates continuously while you train, providing data suitable for pacing and performance tracking. The sensor is designed to capture beats per minute across typical exercise intensities and relay them to connected devices in real time.

• Measured HR range: 30–240 BPM
• Continuous, live streaming to paired devices for immediate feedback
• Low-latency transmission over Bluetooth and ANT+
• Designed for steady readings during cycling, running and other sports

What about comfort, fit, and durability?

The X2 features an adjustable strap and compact sensor pod so it fits a wide range of body sizes comfortably. The textile strap stretches for a secure fit and the sensor is rated IP67 for protection against sweat and brief immersion, making it suitable for outdoor sessions and indoor classes.

• Strap length adjustable from 65 to 95 cm (25.6–37.4 inches)
• Suitable for men, women and youth with a snug but comfortable fit
• IP67 waterproof rating resists sweat, rain and short submersion
• Lightweight sensor minimizes bulk under clothing

How long does the battery last and what support is offered?

The X2 sensor offers extended runtime so you can focus on more workouts between battery changes. XOSS also provides a one-year warranty and customer support to address setup or performance questions.

• Battery life up to approximately 300 hours of use
• One-year warranty backed by XOSS support channels
• Simple maintenance: keep strap clean and replace batteries as needed
• If you have issues, contact XOSS via email or listed channels for assistance

Who is this for? The XOSS X2 is aimed at cyclists who use ANT+ bike computers, runners and multisport enthusiasts who want reliable live heart-rate streaming to phones and apps, and casual fitness users who prefer a chest sensor’s consistent readings. If you need a durable, dual-protocol monitor with an adjustable strap and long battery life for regular training, the X2 is a practical, cost-effective option.