Uptivo Lightband

Uptivo Lightband is the first heart rate monitor with integrated, effort-based LED lights that let you adjust your training intensity in the blink of an eye. Each color is tied to personal training zones and maximum heart rate.
The immediate feedback provided by LED lights and the internal memory make the Lightband an ideal choice for swimming and water sports.

Optical heart rate monitoring - Latest generation optical sensor, suitable for every skin type
Heart rate driven LED lights - Training-zone-based LED lights 
SpO2 measurement - Accurate reading of blood oxygen saturation 
Water resistant - IP68 certification makes it perfect for water aerobics and swimming 
Internal memory - Can store hours of training data 
Bluetooth and ANT+ protocols - Flexible long-distance transmission of heart rate data 
Rechargeable battery - Long duration battery with USB charge cable