When attempting to complete specific tasks in Pokémon Go, you may need to find certain items before you can continue playing. For those who want to challenge Team Rocket’s leader, Giovanni, you’ll need the Super Rocket Radar.

Super Rocket Radars rarely show up in Pokémon Go, which can make it confusing to know where to get them. Thankfully, they do become available when Giovanni appears, but you’ll want to act quickly if you want to grab it. Super Rocket Radars don’t appear for long, and if you miss out on them, you miss your chance to challenge Giovanni and save the Legendary Pokémon he’s captured.