[Necessary for pet lovers]-395nm wavelength can help detect what can't be seen with the naked eye, such as dog and other pet urine/stains, driver's license, official ID card, passport, customs or currency verification. [Small and portable]-The package includes 2 black lights, each measuring 3.7 inches x 1.13 inches (approximately 9.4 cm x 3.9 cm) and weighing 1.8 ounces (approximately 51.0 grams). It is ultra-light and portable, you can put it in your pocket or at homeor elsewhere. The perfect gift for friends, colleagues and pet lovers. [IPX4 Waterproof]-IPX4 waterproof grade, splash-proof. Suitable for rainy weather, snow, emergency situations. Special texture design prevents slipping and reduces the risk of falling. [Durable and safe]-It is made with high-quality aluminum alloy material to make it strong enough to withstand heavy use. The 12 UV bulbs emit brighter light and are more durable than the other 9 UV bulbs. The service life is as long as 15 years. [Quality Assurance]-You will receive 2 black light flashlights (without batteries)