Signals on the device
Sound signals during treatment
- A dual tone (low to high) sounds when the
treatment starts and the intensity increases from
power-save mode to the intensity of the mode
selected.
- A triple tone (high to low) sounds when the
treatment ends.
Battery level signals
- The charging light is solid green when the battery
contains enough energy for at least one treatment.
- The charging light flashes green slowly and
regularly during charging.
- The charging light is solid orange when the
battery is low and does not contain enough
energy for one treatment.
- The charging light turns solid red for 8 seconds
and the device switches off when the battery
is empty.
Ordering accessories
To buy accessories or spare parts, visit
www.shop.philips.com/service or go to y
our Philips dealer. You can also contact the Philips
Consumer Care Centre in your country. The type
number of this device is PR3740.
Spare straps
- Lower back straps are available under type
number PR3723.
- Upper back straps are available under type
number PR3721.
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