The DuoBand Speed & Cadence Sensor is low profile and angle adjustable for an integrated look and ease of installation. It’s compatible with the latest devices using BLE4.0 and ANT+ technologies and indicators for power, low battery and sensor detection.Tech: Bluetooth Smart & ANT+ super low energy technology,Battery: CR2032 x 1 (included),Battery Life (Approx): 900 hr,Transmission Range: < 5 meter (16.4 ft),Waterproof: IPX 7,Added Features: Power / low battery indicator / speed sensor sensing indicator,Size: 6.5 x 2.9 x 1.7 cm / 2.6” x1.1” x 0.7”,Weight: 20 g / 0.71 oz.