 So this is a Rockchip RK Nano D solution. So this is for the smart home? Yeah, it is for the smart home, for the standard LOD device. And this is just for the wireless speaker solutions here. So this is a special wireless speaker, it's not a Bluetooth speaker, what is it? It is based on the Wi-Fi connection. So we have your AP center here. And to do is the video and to separate each channel's audio signal, then to send to each audio speaker. So this is not a normal speaker, is it a special speaker or how does it work? Yeah, a special speaker has the list board inside. So what does it do? So when the speaker will receive the wireless audio from the AP center, then it will have the list sounds. So how many speakers can be at the same time? Yeah, just 5.1 channels, we have the 6 speakers here. This one and this one. And they all synchronize automatically, how does it work? Yeah, it's all synchronized together. And is it ready now, the solution? Yeah, it is ready, so I will show you. So it's the demo show of Rock here. Right. Then the sound is coming out in Dolby. Yeah, this is the first is the right channel. This is the second channel. And this is the left channel. This is the right surround channel. And this is the left surround channel. Nice. So this is ready for people who want to make innovative new wireless speaker solution. Yeah, right. How's the quality of the sound? I think the quality of the sound is quite good. You can listen here. So high fidelity surround speaker without cable? Yeah, right. Just a poor connection, but no other cables. So yeah, I think it is quite good for this solution, for the whole wireless solution, because right now everyone even in the home does not like any wire connections.