Features: 1. The timer is completely waterproof 2. Applied to all gasoline engines 3. Vibration-sensitive design, only need to install the timer on the machine, when the machine is working, the timer starts to work 4. The large timing range is: 9999.9 hours 5. LCD display 6. Low voltage design, built-in battery power supply mode, safe and reliable 7. Blister paper card packaging, beautiful appearance and high grade 8. The product is used in gasoline engines Specifications: Name: Gasoline Engine Timer (Wireless Version) Color: Black Material: ABS Net Weight: about 50g Product size:53.5 mm*36.2mm*14.6 mm Packing size: 190mm*113mm*25mm Product accessories: 2 screws Waterproof grade: Whole body waterproof design, waterproof grade IP68 Maximum timing range: 9999.9 hours Battery capacity: 270mAh Applicable models: universally applicable to all gasoline engine models. The package: 1 x Hour Meter 2 x Screws Installation and operation method: Induction design, use screws or adhesive to fix it on the surface, then it can sense the signal and start timing. Notice: 1. Severe vibration or violent use may make the watch work abnormally. 2. Please do not disassemble this product. 3. Please avoid using it in water or underwater. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.