Product name: COB Flashlight with Whistle Product size: 9.4*2.8cm/3.7*1.1in Battery: 800mAh Working time: 3-8h Mode: Bright light - Medium light - Flash Product material: ABS Product features: 1. Mini COB flashlight with a built-in whistle, providing a compact and versatile outdoor lighting solution. 2. Lightweight and portable design with a convenient hand rope for easy carrying and attachment. 3. Ideal for outdoor activities, sports events, and emergency situations, offering reliable illumination and signaling capabilities. 4. Features COB technology for efficient and bright lighting, ensuring visibility in various environments. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact me we will give you some suggestion, but it is for you reference only. Package includes: 1 pc COB Flashlight with Whistle