Feature:1. Multiple Function: 10 vibration modes, heating function, mute design, effectively help milk flow and make breastfeeding more efficient. Suitable for lactating women.2. Helps With Breastfeeding: Helps improve pain from clogged duct, congestion and mastitis. Use gentle vibrations and heat to prevent blockages and make your breastfeeding more comfortable and relaxing.3. Ergonomic Design: Fits every mother breasts of different shapes and sizes. With a gentle massage, the narrow tip unclogs blocked ducts, simple and practical.4. IPX7 Waterproof: Can be used in the bathroom. 600mah lithium battery, easy USB charging. Lightweight and compact, easy to carry, perfect for travel use.5. Silicone Material: Lactation massager adopts food grade silicone material, safe and eco friendly, soft and skin friendly, suitable for prolonged contact with delicate skin, durable for use.Specification:Item Type: Lactation MassagerMaterial: SiliconeProduct Size: Approx. 110 x 51 x 25mm / 4.3 x 2 x 1inBattery Type: Lithium battery 600mah (built in)Suitable for the Crowd: Adult women, lactating womenCharging Time: 1 hour.Package List:1 x Lactation Massager1 x Manual1 x USB CableNote:1. Safety Precautions: Charge for a full cycle before use. Use the USB cable that came with the product, otherwise it will damage the product or circuit. Only wipe with a soft cloth. Store and charge at room temperature, do not use the product while charging. Pack the product and keep it in a dry and ventilated place. Avoid placing the massager in high temperature areas.2. Please allow slight error due to manual measurement. Thanks for your understanding.