Which products support earbuds?

Here are the following products that support earbuds through a 3.5mm headphone port without an accessory:

• 50S
• 30K
• 20S
• 20S EVO
• SF1
• SF2
• SF4
• 10S
• SMH5 MultiCom

The following products require an accessory to support earbuds through a 3.5mm headphone port:

• SMH10
  • SMH-A0303
  • SMH-A0304
  • SMH-A0305
  • SMH-A0306
• SMH10R
  • SC-A0305
• 10R 
  • 10R-A0101
• 10C
  • 10C-A0101
• 10C Pro
  • 10C-A0101
• 10C EVO
  • 10C-A0101
• SFR
  • 10R-A0101
• 50R
  • 10R-A0101