You may experience that it's not possible to have a common Anytime Talk chat group with members from both the Xperia Ear and the Xperia Ear Duo.
If you're using the Xperia Ear with Anytime Talk BETA, you cannot create a chat group with Xperia Ear Duo members, unless you update to Anytime Talk 1.0 in your Xperia Ear app. When you use Xperia Ear with Anytime Talk 1.0, it's possible to create a chat group involving Xperia Ear Duo members.
Note! Anytime Talk 1.0 is currently only available in Japan. Availability in other areas to be updated in the future.