Receiver in canal or receiver in the ear
The receiver-in-canal (RIC) and receiver-in-the-ear (RITE) styles are similar to a behind-the-ear hearing aid with the speaker or receiver that sits in the ear canal. A tiny wire, rather than tubing, connects the piece behind the ear to the speaker or receiver.

Receiver-in-canal hearing aid:
​Typically has a less visible behind-the-ear portion
Has directional microphones
Has manual control options
May be available with rechargeable battery
Is susceptible to earwax clogging the speaker