Sharp SHV43 Notes On Usage page 36

2
Hold the product securely and shake it approximately 20
times until there is no more water splashing.
Make sure of the safety around you and shake the product while holding it
securely not to let it drop.
Earphone/ Microphone
jack section
Mouthpiece
(Microphone)
section
External
connection
jack section
- 35 -
Earpiece (Receiver)
section
Key section