Citizen CA7090-87L Instruction Manual page 13

Recharging your watch
■ 
I f the reserve power becomes insufficient
(Insufficient Charge Warning Function)
When the rechargeable cell charge reaches a low
power state, the Insufficient Charge Warning
Function engages. This cause the second hand
to move in two-second intervals (two-second
interval movement). Be sure to immediately fully
charge your timepiece by exposing it to light.
• Two-second interval movement continues for some 7 days until the watch stops
completely due to battery depletion.
When the watch is operating in the two-second interval mode (low power/insufficient
charge warning), you cannot operate chronograph.
12
60
50 10
40 20
30