Features: USB 5V adjustable timer power-off switching control cable, countdown timer for 5 minutes to 24 hours and 55 minutes, timer power-off switching wire. Equipped with digital display screen, time progress can be viewed in real-time, making it more intuitived. Supports 5V2A, plug and play, with a total cable length of 140cm, not support data transmission function. Small in size design, easy to carry and use. Suitable for USB fan, blowers, USB water pumps, USB lights, fish tanks, data cable and more. Specifications: Material: Plastic Color: black Middle Part Size: approx. 7x2.7x1.6cm/2.76x1.06x0.63inch Double Side Cable Length: approx. 70cm/27.56inch Interfaces: USB Male Female Interfaces Voltages: 5V Hour threshold: 1hr Minutes threshold: 5mins Note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. Package includes: 1 Piece USB Countdown Switching Control Cable