Seac Luce Diving Light (Black) Type of batteries: 1, 5 AA/R6 alkaline or 1,2 V same size recharrgeable Autonomy: 250 m Maximum depth: 100 m. Diameter/length:  45/ lunghezza 155 mm . Weight: 330 g with batteries. On-off switch: mechanical on-off switch Seal: double O-Ring radial seal Glass: clear Policabonate.