Polar OH1 Optical Heart Rate Sensor

Built-In Memory With Polar Beat	Polar OH1 has a built-in memory that can store up to 200 hours of training data. You can sync your data to Polar Flow with both the Polar Flow app and web service.
Comfortable Textile Armband	The Polar OH1 armband fits snugly, comfortably and discreetly around your arm. The band is made of a soft textile material and is machine-washable.
Heart Rate Sensor Mode	You can use Polar OH1 to broadcast your heart rate to any Bluetooth-compatible Polar device, many fitness apps and Bluetooth-compatible gym equipment.
Long Battery Life	With Polar OH1 you get up to 12 hours of training time on a single charge. You can charge the battery easily with the Polar OH1 USB adapter (included).
Optical Heart Rate Tracking	Polar OH1 tracks your heart rate with Polar’s high-quality 6-LED optical heart rate solution.
Waterproof	Polar OH1 is waterproof up to 30 m.

Battery	Rechargeable 45 mAh lithium polymer battery
Compatibility	iOS mobile devices: iPhone 4S and later; Android mobile devices with Bluetooth 4.0 capability and Android 4.3 or later.
Measurements	Weight: Sensor 5 g, armband 12 g Height: 9.5 mm Diameter: 29.85 mm Armband Size: M-XXL, machine-washable
Memory	4 MB, up to 200 hours of training time
Updates	Via Polar Flow
Water Resistance	30 m

Warranty Period	2 years
Service Centre	Polar Electro Singapore Pte Ltd 1 Commonwealth Lane, #07-04 One Commonwealth Singapore 149544 Phone: +65 6692 7722 Email: sgcs@polar.com Operating: Monday - Friday 9:00 am - 5:00 pm (Sat, Sun & PH Closed)
Product Details	https://www.polar.com/sg-en/products/accessories/oh1-optical-heart-rate-sensor