Wahl LifeProof Rechargeable lithium ion wet / dry water proof foil shaver with shock resistant housing for shaving, trimming, and wet or dry shave with precision ground trimmer blade. High impact, shock resistant, dual foil rechargeable lithium ion waterproof shaver with popup precision ground trimmer best for shaving, trimming and wet or dry shave. Long lasting lithium ion technology go months between charges with regular use.