For connection socket, charging socket, connector, controls and microphone (if any):

• Wipe it with damp soft cloth.

For the earplug:

• Wipe it with soft cloth, or
• Gently wash it under running tap water.  Then gently shake off the water and air-dry.

To avoid damage or malfunction of the product:

• Any connection socket, charging socket, connector, controls and microphone (if any) shall not be exposed to dripping or splashing.
• Do not use any cleaning agents containing alcohol, ammonia, benzene, or abrasives.
• Do not immerse the product into water.