I just bought two headphones (BTH13 and BTH18) for our daughter. To connect our Toniebox we need a jack bluetooth adapter to be able to connect the headphones. Problem is that neither of the headphones will connect to the adapters. I already tried three different ones: a no name 5.0 and two Ugreen adapters (with the BT standards 5.2 and 5.3). I just does not work. I can connect my (adult) headsets, made by Jabra and Plantronics, to the adapters though. Also, connecting the iClever headphones to a call phone works without an issue. So there seems to be an incompatibility between the BT adapters and the iClever headphones. Hence my question: 

Is there any possibility to connect the BTH13 and/or BTH18 to a Bluetooth adapter. If so, which adapters are compatible?

Thanks for a brief feedback. 

KR

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