Note: The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title. If you need to change the color or style, you need to contact us within 12 hours after placing the order. Our product description: Product Features: Simple to Use: LED Glowing bracelet by simply slap wrap it to fit on both adult and children, men or women for the wrist, ankle, and arm. Comfortable to wear: Lightweight and ergonomic design, which you´ll not feel uncomfortable to wear it when you´re. Eco-Friendly Product materials: The flash display bracelet is made of high-quality Plastic (TPU ABC PC) for perfect visual effects. Supper glow in the dark: this LED Slap band provides 360-degree ultra-high visibility in dark and nighttime activities. Long-time Use: Built-in 160mAh lithium battery, long battery life for durable use. Suitable for Party, Concert, Camping, Outdoor Sports and etc. Specifications: Product Name: LED BT Bracelet Product material: ABS+TPU+PC Color: Black Font Color: Red/Blue/Green/White/Pink/Four color Battery performance: 3.7V polymer lithium battery Battery Capacity: 160mAh LED screen size: 105 * 20MM Input voltage / current: 5V/1A Charging type: USB interface charging Resolution: 5 * 28 pixels Connection method: BT mobile APP Supported lanquages: English or numbers Charging time: 2-3 hours Use time: 8-10 hours Item Size: 75 * 60 * 27MM / 2.95 * 2.36 * 1.06in Item Weight: 43g / 1.52oz Package Size: 100 * 80 * 33MM / 3.94 * 3.15 * 1.30in Package Weight: 95.3g / 3.36oz Package List: 1 * Bracelet 1 * USB Cable 1 * User Manual Note: Because the model and display effect of the monitor may be different, there may be slight differences in color, and the size is manually measured, there may be an error of 1-2cm, please understand.