Signia 2.0 Click Sleeves are suitable for all Siemens, Signia, AudioService, Rexton RIC and Instant fits including NHS issued Siemens Octiv and Teneo R hearing aids that use a Mini Receiver wire (apart from the AX range onwards launched in May 2021 that uses Ear Tip and Click Sleeve 3.0 domes and sleeves). Signia 2.0 sleeves are suitable for Signia Silk hearing aids up to and including Xperience (X).