Philips DL8790/10 - Manual (Page 18)

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- Use this device under the right environmental conditions as indicated in this user
manual. If not, this could affect the performance and lifetime of the device and
measurement results.
- If you have any problems with this device, such as setting up, malfunction,
maintenance, please contact Philips Consumer Care or visit www.philips.com/support.
- If you have doubts about the accuracy of the measurements by the watch,
stop using the watch and read the troubleshooting section. If you cannot find a
solution there, please contact Philips Consumer Care or
visit www.philips.com/
support. Accurate measurement relies on three key factors: Placement of the sensor
in direct contact with the skin, transmittance of light through the skin, and sufficient
blood flow through the skin. There are conditions where accurate optical heart rate
measurement is not possible.