Part of our BATTERY+ line, this vibe features the strongest battery-operated motor out there, with a deep bass tone vibration that’s sure to satisfy. Designed for maximum freedom, the DARLING DEVIL uses smart charging technology to distinguish between standard or rechargeable batteries, while running equally well on both. You can even charge your rechargeable batteries inside the toy with the addition of the HYBRID KIT, for all of the convenience of a battery toy plus the eco-friendly benefits of a rechargeable vibe. In short, FUN FACTORY’s engineered have invented entirely new technology to bring you the best vibrator possible. DARLING DEVIL gives you the kind of vibration you crave: deep, rumbling, and of course, strong! BATTERY+ toys feature the most powerful battery-operated motors on the market. Unlike most battery toys, it maintains the same level of vibration strength throughout its entire charge, for powerful FUN until the end!