Possible Clues:

• Spring part
• What spring may help the watch to do
• Just for the season it may do what 24 across do
• What a cheap watch perhaps will do with spring
• That's all a cheap watch is likely to do with its spring
• What the spring of a cheap watch will perhaps do
• The sort of spring that perhaps will work the watch
• What the spring of a cheap watch perhaps will do
• Its spring might, for the present, work the clock
• With its spring, that's what a cheap watch perhaps will do