英文關鍵字
1080p
1920x1080
alarm
all
background
black
clock
concept
count
countdown
counting
definition
digit
digital
diode
display
down
electronic
footage
hdv
hidef
high
hour
hours
included
led
minute
minutes
numbers
numeral
panel
red
schedule
second
sign
stopwatch
symbol
time
timer
type
watch