Feature: 1. SUPER QUIET: Breast pump uses solid material, the noise of the motor can be controlled to less than 50 decibels, not disturbing the baby's sleep. 2. USB CHARGING: Wearable breast pump is rechargeable, you can easily charge it via power bank, computer or other devices. 3. SAFE MATERIALS: All wearable electric breast pump parts are made of food grade silicone and polypropylene, no harmful substances. 4. BREASTMILK: Breastmilk is completely safe for your baby, no need to worry about potential chemicals leaching into the breast milk. 5. WEARABLE: Electric breast pump is small and lightweight, can be placed inside the bra, hands free, easier to use, no tubes, no strings, no hanging. Specification: Item Type: Wearable Breast Pump Material: PP Battery Type: Lithium Battery 1200mAh( Shipped with Built in Battery) Product Size: Approx. 15x9x6.5cm/5.9x3.5x2.6in. Package List: 1 x Breast Pump Cup1 x USB Cable1 x Instruction Manual1 x Wearing Strip1 x Breast Pump Note: Manual measurement, please allow 1‑2mm error.