Diono Radian 3RXT Manual De Instrucciones página 31

FIRST SETUP
RECLINE LEVEL INDICATOR
Use recline level indicator on car seat to make sure
the car seat is at the appropriate angle for your child:
Infant: Use from 5-22 lb (2.3-10 kg).
Toddler: Use from 40 lb (18 kg) and up.
Level line should fall within weight range noted.
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