Question: what are symbols on apple watch?
Answer: Red Dot Icon. This icon signifies that there are unread notifications on your Apple Watch. ... 
Charging Icon. The green flash icon on Apple Watch shows that your Apple Watch is currently charging on its dock.
Low Battery Icon. ... 
Lock Icon. ... 
Water Lock Icon. ... 
Do Not Disturb Icon. ... 
Airplane Mode Icon. ... 
Theater Mode Icon.