1. Material: Cotton 2. Light source: 4 colors convertible light source 3. Rechargeable lithium battery: 450mAh. 4. DIY Flashing message - Use app controlled customized message whateve you want. Pretty cool and attractive after wearing this LED mask, making you a star in parties. 5.Rechargeable & Wireless - LED battery is hidden inside the controller. Charge this mask by a USB cable, no more accessories, no need AA batteries. Fully charging takes 2 hours, luminous mask can continuous work 6-8 hours . 6.Safe & Breathable - This latest upgrade LED light up facemask is made of cotton material, breathable , soft and comfortable, no heat, no radiation, very safe. Screen size:152*32*0.25mm Charging mode:Micro USB Color: black mask Light source: 4 colors convertible light source Support system: Android and ios mobile phone Made of High quality Electronic devices and material Light,convenient,edit content anytime and anywhere,the effect is eye-catching Publicity,stage shows,travel lighting and more its good choice The product uses USB line of mobile phone to charge,lithium battery power supply,so very convenient to use Software support: all languages Soft and comfortable,one size fits most Suit for UV Protection,night sports,golf,party rave,dancing,lights show Note Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully. Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanksfor your understanding. Package includes: 1x LED mask 1x usb charging cable