Ergonomic Finger Vibrator, best fit for ring size 8.5 and larger.Dioni was designed to transform your finger into the ultimate pleasure instrument. By harmoniously blending human interaction and electrifying vibrations, Dioni bridges the gap between technology and touch.Equipped with a super powerful motor exclusive to FemmeFunn, Dioni delivers sensational performance. The 20 vibrating modes and the boost function help build the pleasure up with our finger vibrator.Conveniently fitting right over your finger, this ergonomically shaped vibrator gives you targeted stimulation to amp up a solo play or add new exciting sensations while touching your partner.Splashproof and wireless, Dioni adds fun to sex. Integrating vibrations into a human-like touch that feels almost natural yet, somehow, so much better.Length Large: 5 inches / 12,7 cmWidth Large: 1.53 inches / 3,9 cm20 Vibration modesBoost functionErgonomic shape100% WaterproofMagnetic chargingMaterial: Premium SiliconeBattery: Li-ionCharging Voltage: 5VRun Time: Approx. 1 Hour at Highest Setting*Charge Time: Approx. 1.5 Hours**Charging and use times are estimates only. Battery life varies over time, and all batteries experience a decline in useful life over time.