Thank you for viewing. I have confirmed that it works at medium, high, and super-high speeds with batteries inserted. I do not know the detailed specifications. I will ship the items shown in the product images. Please check the images carefully before purchasing. Feel free to contact me. I try to ship within 24 hours, but shipping may be delayed due to work. Thank you for your understanding. To prevent any problems, please adhere to the "no returns" policy. Instant purchase OK. Please note that priority is given to those who purchase immediately.