Product characteristics Sound alarm Large screen and clear digits Magnetic back, retractable stand and lanyard count up and down On/off switch, save battery (battery is not included). Use AAA 7 batteries. Long press M/S, you can speed up digital changes and save setting time. Has memory function Very easy to use. Product description Package Quantity: 4 Digital Timers Time units: Minutes (M), Seconds (S) Maximum time: 99 minutes, 59 seconds Alarm sound duration: 60 seconds Product Size: 3" x 2.7" x 0.7" Screen size 2.02'' x 0.99'' Color: white, pink, green and blue. 【High-Quality Materials】Crafted from premium, durable materials to ensure longevity and superior performance. Each product is meticulously tested to meet high standards of quality and safety. 【User-Friendly Design】Ergonomically designed for ease of use, this product offers intuitive controls and a comfortable grip, making it perfect for both beginners and experienced users. 【Versatile Functionality】This product is multifunctional and can be used for a variety of tasks, providing you with the flexibility and convenience needed to handle multiple uses with a single tool. 【Eco-Friendly and Sustainable】Made with environmentally conscious practices, this product is eco-friendly and contributes to sustainability efforts. It is designed to minimize waste and reduce environmental impact. 【Exceptional Performance】Engineered for high efficiency and effectiveness, this product delivers outstanding results every time. Its advanced features ensure consistent performance, making it a reliable choice for your needs