A 4-in-1 massager is a versatile wellness device designed to provide comprehensive relief through multiple therapeutic functions.These devices typically combine features such as heat therapy, vibration massage, red light therapy, and electrical muscle stimulation (EMS) to address various physical discomforts.They are commonly used to alleviate muscle tension, improve circulation, reduce inflammation, and promote relaxation.Many models are cordless, rechargeable, and ergonomically designed for ease of use on different body areas, including the neck, back, legs, and feet
