KS26556 Removable Battery Hot Compress & Vibration Massage Eye Mask This electric eye massage mask adopts soft memory foam and lycra material, comfortable and skin-friendly for long-time wearing. Equipped with 1100mAh removable battery and 5W rated power. It comes with 4 optional vibration massage modes and 3 temperature levels of hot compress, effectively soothe eye fatigue, dry eyes and puffiness after long screen time. Detachable battery design supports convenient charging and battery replacement. Lightweight and portable, perfect for relaxing your eyes at home, in office or during travel.