Features&Specification:PoweredbyUSB,nodriverrequiredDiffusefragranceoilwithyourcomputerDropfragranceoilinthetrifurcate-shapedhole3to5dropsareenoughforoperatingalldaylongMinisizeforadiscreteuseSize:67mmx27mmx7mmWeight:4.5gContents:USBFragranceOilDriveFragranceOilUserManualScent:Rose-RedPeppermint-GreenLemon-OrangeL***ender–Purple)