The complete guide
Streaming your own sounds: getting the most from a Bluetooth sound machine
A sound machine with Bluetooth is a slightly different product from a purely offline one, and it's worth understanding what that extra feature is actually for before deciding whether you need it.
Built-in sounds cover most nights
The 30 sounds built into the Hranio CS11 are enough for the overwhelming majority of bedtimes: steady white noise, rain, waves and more, chosen and looped without needing a phone anywhere nearby. Bluetooth isn't a replacement for this library, it's an addition for the specific situations the built-in sounds don't cover.
When streaming your own audio actually helps
The obvious use case is playing something the built-in library doesn't have: a specific lullaby album, a white noise podcast designed for longer stretches, or an audiobook for an older sibling sharing the room. It's also useful if you've found a particular sound elsewhere, a recording of rainfall from a specific app, for instance, that works better for your baby than any of the presets.
Keep the phone out of the routine once it's playing
The easiest way to use Bluetooth well here is to pair once, start the audio, then put the phone away entirely, ideally on airlock or do-not-disturb so a notification doesn't interrupt a stream at 2am. The point of the feature is extra sound options, not turning bedtime into another screen-adjacent routine.
The night light doesn't need Bluetooth at all
It's worth remembering the 10-mode night light runs entirely independently, no pairing, no phone, just the physical dial. On nights when sound isn't needed at all, for a quick nappy check, say, you can use the light on its own and leave the Bluetooth feature untouched. Treating the connected features as optional extras rather than the main event is what makes this kind of machine flexible rather than fiddly.