The Nobu Aiko. Exclusive touch sensitive Temperature Sensor System increases vibration intensity as body heat is detected during use. Silky smooth, ergonomic shaft with larger head/tip. Quiet 3 motor system, choice of 10 vibration levels activated via push button. Measuring 8.5 inches by 1.5 inches, the AIKO is constructed of top quality, odorless, body friendly silicone. Lightweight, splash-proof and rechargeable via USB connection or A/C power supply. The heavy duty Li-ion battery allows for up to 3 hours between charges. Materials: medical grade Silicone shaft, ABS plastic base, handle. Temperature Sensor System, 10 levels of vibration, top quality silicone, 3 motors, USB/AC power recharge, 8.5 inches by 1.5 inches, splash proof.