Diono Radian 3R Manual De Instrucciones página 40

FIRST SETUP
G. RECLINE LEVEL INDICATOR (CANADA ONLY)
Use in rear-facing installation ONLY!
Use recline level indicator on car seat to make sure the
car seat is at the appropriate angle for your child:
Infant: Use from 2.3-10 kg.
Toddler: Use from 18 kg and up.
Level line should fall within weight range noted.
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