I've been thinking about buying these, but they seem more like an antique than something actually worth playing these games on. I'd rather play these classics on my Switch or 3DS if I'm on the go. Regardless, I hope you have a good time.
I'm very pleased with them! Both come with a USB lead to charge the battery. The Legend of Zelda comes with a 300 gold points voucher code for use on a Switch account. The games look and sound great. I can highly recommend.