The backlight works without delay after pressing the button. The stopwatch is designed for 59 minutes 59 seconds. Rainproof.
Provided some images to give a better idea of the product's size and scale.
Portzon Women'S Waist Trainer: Weight Loss, Sweat Belt, Sauna Trimmer, Tummy Toner, Lumbar Support
47 Review
Metal Frame Night Driving Glasses For Men: BIRCEN HD Anti-Glare Night Vision Glasses For Safe Driving
47 Review
Segmented Beaded Kids Jump Rope For Exercise And Outdoor Activities - Durable And Shatterproof - Easily Adjustable And Light Weight Skipping Rope For Kids
48 Review
Smart bracelet Xiaomi Mi Smart Band 6 CN, black
50 Review