HiZoo 4-prong neck massager pillow Pre-owned: Only used this for less than a week and decided it wasn't for me. Personally, my neck is too thin and too short to use this. It kept pinching my ears and it hurt. Recommened for someone with a longer and thicker neck. Look at pictures to see my neck measurements. Please purchase responsibliy, I do not accept returns. My Approximate Neck Measurements: 12" Circumference, 4" Long. Features: Cordless Operation USB-C Rechargeable Intensity: Gentle, Moderate, Intense Heat: Mild, Hot Mode: Clockwise, Counter Clockwise, Deep Tissue Massage Product Specifications Rated Voltage: 7.4V Charging Input: 5V / 2A Rated Power: 18.5W Battery Capacity: 2000mAh Net Weight: 1.51 kg Comes With: - Massager - Instruction Manual - Power Cable