Exercise for your jaw. Shape your chiseled jawline. BENEFITS OF USING: Provides a workout for your jaw and neck Increase blood flow and reduce muscle tightness Eliminate excess jaw fat Reduce double chins and saggy neck Use regularly for a sharper and slimmer jaw ✔ 3 Different Levels: You can change among 3 different springs that provide a different feel and different resistances (Red-Light, Green-Medium, Black-Heavy) ✔ Simple Usage: It is ready to use after you put in the spring you desire. No need for batteries or electricity. ✔ Proven Results: Use it regularly, best every day. Generally, you will start to see results after two weeks by using it every day for 10 minutes, twice a day. Specifications: Item weight: 93gItem size: 13.6 * 5.6 * 4.2cmPackage including:1 * Neckline slimmer1 * Carry bag3 * Springs (Low resistance, Medium resistance, and High resistance)1 * Instruction manual