I travel to Japan every year and I always order my pocket wifi from Japan Wireless. It's very convenient.

Efficient and convenient to drop off at airport or any post box

Worked exactly as described -- picked it up at the hotel, neat pack and clear info. My son and I had unlimited wifi throughout Japan and across 3 cites as well as during public transport transfers. Dropped it off at the airport on the way home. Easy. Will use again. Highly recommend.

convenient, reliable,perfect for our 8 days stay in Tokyo

Worked very well, had no connection issues anywhere during our trip

Utilissimo e funzionante in ogni contesto. Non ha mai perso la connessione ed era molto veloce

Easy to pick up at the airport. Easy to return with prepaid envelope.
Wifi works very well and battery life.
And what's more, if your mobile operator allows you to make calls via wifi, you'll be reachable at any time without having to pay an extra fee.

I've gone with Japan Wireless in 2023 and 2025 and they have not let me down. Will use them again and again on my next trip! (Also their blog reference for ramen was spot on!)

used it for a group of 8 for 1 week, fast speeds all throughout tokyo.

ネットで海外から簡単に注文ができて、到着地に届いてるのは便利でした。
予備のバッテリーがついてくるのも良い公安でした。
思ったより、機械が熱を持つのにはちょっと心配でした。
思ったより、Wi-Fiのスピードは遅かったでした。
計測したところで、約40から50Mbでした。
自宅では200 Mb近いから少し慣れるのに時間がかかりました。
リターンも郵便局からで出せるから便利でした。
次回も使う予定です。