There’s no sound sweeter than birdsong! And for city-dwellers who miss it, there’s always Legami’s Birdsong Box - The Sound of Nature. The infrared motion sensor detects all movement within a 3-metre radius and responds with 20 seconds of cheerful chirping.
 

Works in daylight only
Wall-mountable or free-standing
Adjustable volume
USB rechargeable
USB-C charging cable included