The Eevee Tamagotchi Nano (aka Eivui x Tamagotchi) was released on January 26, 2019 in Japan. It is a Pokemon Eevee themed Nano with new features added in. Two shells were released.
Berry Get (ゲット)
Startup When you first start your tama, you will see the clock screen. Use the A button to set the hour. Be mindful of AM and PM. Press the B button to confirm. Use the A button to change the minutes. Then press the B button a final time to confirm.
You will see the egg on the screen for about 20 seconds, then an Eevee is hatched.
Sound To mute the sound, press and hold the C button, then press the A button. You will see a menu pop up with おん (on) and おふ (off). Use the A button to select on or off, then press the B button to confirm.
Setting the Clock To set the clock to a different time, press the B button while on the character screen. On the clock screen, press and hold the C button, then press the A button. Use the A button to set the hour, then press the B button to confirm. Press the A button to set the minutes, then press the B button for a final confirmation.
Food To feed your Eevee, press the A button while on the character screen. Select meal using the B button, then choose food or snack using A, and confirm using B. Kibble will fulfill her hunger, while the snack will fulfill her happiness.
Game The Eevee Tamagotchi Nano actually has two games unlike other Nano iterations. Unlike many Tamagotchi games, you only need to succeed 1/5 times to win. 5 successes is a perfect win.
Berry Get This is a simple catching game. Use the A and B button to move the bottom line left and right to catch the berries. They look more like a cherry or an apple. Avoid the elementals. Press C to exit the game, or catch an elemental. If you catch an elemental, Eevee will stare at it confused for a second.
Dance Eevee will dance on the screen for a few seconds before letters beneath an arrow appear to the left of her. Use the A and B buttons, and press the the corresponding buttons in the order shown from top to bottom. Press the C button to exit the game.
Calls Like in other Nanos, there is no on-screen alert. You need to listen for it. If you miss it, or have your sound muted, you can press the C button to see if she needs anything. If she looks dizzy, she is hungry. If she looks unhappy, then she needs a treat or to play a game. Gauge her reaction to see if he needs care. If she smiles at you, then some hearts are empty, but not all. If you get the close-up animation, then all of her hearts are full.
Evolutions This tama includes all 8 Eevee evolutions with an additional bonus 3 evolutions. See the chart below for how to get certain characters.
Hairballs Instead of pooping, Eevee coughs up hairballs. Press the A button to clear them from the screen by brushing Eevee.
Run Away There is no death function. Eevee will simply run away, and leave a Pokeball on the screen if you neglect her enough.