Although the mainstream sports bracelets and watches on the market now have built-in heart rate meters, many sports fans will wear traditional chest-belt heart rate meters to measure their heart rate. However, experience is not good enough. If you are uncomfortable, if you don't have good workmanship, you may also wear the skin on your chest (the students who have used the chest strap must know what I am talking about). Polar now offers another way of measuring heart rate for people who like to exercise. They released an OH1 heart rate belt fixed on the arm, priced at $79.95 (about 530 yuan). Toner Cartridge For Lexmark,Newly Premium Toner Cartridge,Lately Laser Toner Cartridge,Black Toner Cartridge Compatible jiangmen jinheng office equipment Co. Ltd. , https://www.jmjhtonercartridge.com
Last year, Polar released an M600 sports watch. In addition to the Android Wear operating system, another highlight is the integration of six LED optical heart rate meters. The M430 released earlier this year also uses the 6 LED heart rate meter. Polar now uses the 6LED heart rate meter on the OH1 heart rate belt. 
In terms of use, the OH1 armband can be tied to the big or small arm, which is more comfortable than the traditional chest type heart rate belt and more stable and accurate than the heart rate monitor on the wristwatch.
Supports Bluetooth 4.0 (but doesn't support ANT+). It can be connected to a mobile phone or sports watch, or it can be used independently. The built-in space can store 200 hours of heart rate data. Life time up to 12 hours, waterproof capacity of 30 meters, daily use no pressure. 
Product Name: Polar OH1 Arm Rate Calculator Buy Link:
Product Price: $79.95 (about ¥530)
Listing date: October 2017 
