Mogone Outdoor Portable Electric Mosquito Repellent, Carabiner Type (Silver) The new concept of portable electronic mosquito repellents Mogone is strongly blocked the approach of mosquitoes. Nice design! Portable size! Powerful mosquito blocked! It reduces mosquito bites about 70-80%. You can use it for 30 hours, once the battery is fully charged. (Only takes 30mins for fully charged) The operating principle is simple. It works by mixing sound which mosquitoes do not like. (Dragonfly's sound, the sound of a male mosquito's wings, ultrasonic sound mosquitoes dislike) Its own technology which is using three steps of sound oscillations that keep mosquitoes off also, it has better quality of sound compared with using smartphone app. It doesn't make any toxic chemicals that harmless to the human body, environment, and pets. It makes a little sound. But it doesn't feel in daily life. There are two types: Mogone Mini (necklace type), Mogone (carabiner-type) and two colors : silver, gold It will protect you from mosquitoes, not only indoors but also outdoor activities(camping, beach, fishing, etc.) Use attached with anything such as necklaces, bags, tents, etc. Necklaces, bags, tents, etc. Equipped to use anywhere. Configuration: Mogone Mini, necklaces, charging cable / Mogone, carabiners, charging cable