Feature:
1. This arm band uses advanced optical heart rate technology to monitor your heart rate.
2. Then transfer it to your phone via + and BT technologies.
3. Its rechargeable, comfortable and compatible with most fitness apps. Very suitable for people who like sports.
4. The principle of heart rate armband is to measure reflected/transmitted light by hitting light on the skin with optical sensor. Because blood absorbs light at a specific wavelength, the reflection of light is used to detect the contraction of blood vessels and determine the heartbeat.
5. Very durable and comfortable to wear.
Specification:
Condition: 100% New
Item Type: Arm Strap
Material: ABS
Color: as picture shown
Size: short belt size: 26x2.5cm/10.2x1inch
Long belt size: 37.5x2.5cm/14.8x1inch
Battery: rechargeable lithium battery
Duration: can work for 40 hours continuously
Transport protocol :ANT+&BT4.0
Waterproof grade: IP67
The correct way to wear the arm strap
Remember not to wear on the wrist, it is arm band, should be worn in less fat, more muscle parts (rich capillaries)
It should be tight, not loose, not feel swollen
If too loose, photoelectric head can not adhere to the skin, the data is not accurate.
If too tight, can interfere with blood flow, leading to inaccurate data
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Package List:
1 x Heart Rate Monitor Arm Strap
2 x Straps
1 x Charger