The Smart Ring Protector S from RingConn is specifically designed for the RingConn Smart Ring, but there is no explicit mention that it is specifically designed for the RingConn 2. However, the protector is designed to protect the RingConn Smart Ring in general without compromising functionality or comfort. It is therefore likely that it is also compatible with the RingConn 2, but for absolute certainty you should consult the manufacturer's instructions or RingConn's customer service.