Where are wide lens? need them for weavile icicle crash?

Question

Where are they? If they are in the battle tower they cost BP. Mention somewhere else where I can get that.

Answer 1

One Wide Lens can be found in Circhester by an NPC called Howses:
> From Howses in the second room from the left on the top floor of Hotel Ionia's eastern building after identifying that the berries were eaten by a Skwovet

https://bulbapedia.bulbagarden.net/wiki/Circhester#Pok.C3.A9mon

For a repeatable method, wild Sableye have a 5% chance to hold Wide Lens.
https://bulbapedia.bulbagarden.net/wiki/Sableye_(Pokémon)

Answer 2

In Circhester, there are 2 hotels. Enter the one on the right. To get to the floor, go into the elevator. If you enter the first room on the left, and cutscene will play about finding the culprit of the hotel’s berries. You have to solve the mystery. Talk to all of the suspects and then one of the suspect’s Skwovet will appear. Talk to it twice, and say it’s the culprit. The detective will award you with the Wide Lens.

Hope this helps! :)