A cordless hair curler is a portable, battery-powered styling tool designed to curl hair effortlessly without the need for a power outlet. It typically features a compact and lightweight design, making it ideal for travel or on-the-go touch-ups. The device often includes: 1. Wireless Operation: Powered by rechargeable batteries, usually with a USB charging option. 2. Temperature Control: Adjustable heat settings to suit different hair types and styles. 3. Barrel Design: Ceramic or tourmaline-coated barrels for smooth, frizz-free curls while reducing heat damage. 4. Automatic Curling: Some models feature a built-in motor that wraps hair around the barrel automatically for consistent, salon-like results.