Great piece of kit when working. Unfortunately the right sleep bud is failing to connect to the app via bluetooth since upgrading my phone to iPhone 13. Both buds charge fully but Bose do not offer support anymore so will not troubleshoot. If you fancy a challenge or know a bit about how to pair these then these are a bargain as they wee in excess of £200 new. Unfortunately they cannot play the sleep sounds without both buds pairing. If you want them to have a good nights sleep then they work well for that. Although discontinued by Bose they do qualify for trade-in discounts off new Bose kit. Comes as seen in original packaging / instructions and unused small and large buds (the medium ones are installed). As you can see the unused buds are still in a sealed packet.
eBay