80 Custom-made clinical strength lasers flood the scalp with photo-energy, to improve hair growth and hair quality. The PRO LH80 is the portable equivalent of a clinical Laser Phototherapy machine. Simple to use, it has just a single control button and speaks its instructions. The female vocal readout tells you how many treatments you have carried out so far and warns you when the battery needs charging. The Theradome is completely hands-free and its durable rechargeable lithium ion battery can carry out around 7 treatments per charge.