Power Source: It operates wirelessly using a high-capacity, rechargeable lithium-ion battery block attached to the base. Many generic models utilize standard 21V tool-style battery architectures.Controls: It features a simple physical toggle switch on the front to alternate between speed modes (typically off, low, and high speed settings).Design: Built with a sturdy protective outer grille, a compact multi-blade system designed for maximized airflow ("strong wind"), and a lightweight frame optimized for portabilit