ReliOn Prime User Instruction Manual page 16

WARNING:
Keep all batteries out of children's reach. If a battery is swallowed, consult a
doctor immediately.
When the battery power is getting low, your meter shows
enough power for about 100 tests before you need to replace the battery.
If the is flashing, there is only enough power for about 20 tests. Replace
the battery as soon as possible.
When the battery has run out, the meter will not work.
16
. You have
CR2032
3V
+