This wristband is made of eco-friendly silicone material which can trace your movement steps and movement distance, counting calories, distance, adjustable step length and weight. Featuring low power consumption.This product must be your good companion in daily life and can make your life funnier. We can rush service and the price includes shipping cost to ca. Great for exercising, running, walking and so on. Customized logo is welcomed. Product size is 9 1/2 in lenght and 1 1/2 in width. Many colors for your option. Welcome you rush order. 100% guarantee for quality, We are GLAD to get SINGLE PIECE ORDER. Please order today!