Repellent Outdoor Mosquito Repellent Portable Mosquito Repellent USB Charging Intelligent Variable Frequency Repellent Product description Applicable scenarios: outdoor tourism, camping, fishing, outdoor work, baby products, pet insect repellent At the same time, it has the same effect on cockroaches, mice and other pests!. Working principle: portable electronic insect this device is based on physical principles, and uses electronic simulation technology to achieve the effect of driving away , because and can't stand those sound waves, so they are far away. USB charging: 5V 1-2a, working voltage: 3.7V, working current less than 1.5ua, working current less than 1.8Ma, working frequency 15-75khz (automatic cycle scanning) power supply: built-in polymer physical electricity 100ma.3.7v. The working light is on when the battery is powered on or charged. Effective range: 10-60 square meters. Product size: 4.45 x 6.2cm/1.7in x 2.4in Product color: White / Black Note 1. This product can be used with USB power adapter, computer, mobile power and other products 2. If the product is not used for a long time. Please disconnect the power supply to ensure the normal life of the product. Products include 1xFlea