The Amazon Echo 4th Gen (Full Size) Smart Home Hub L4S3RE S3 is a blue sphere-shaped smart speaker by Amazon. It features a 3.5mm jack for audio input and has various connectivity options such as wireless, Bluetooth, Wi-Fi, and wired. With smart home compatibility with Alexa, this smart speaker allows for voice search and Bluetooth connectivity. Made in China, it does not come with a manufacturer warranty.