Marine Pictolife Diving Hands Signals This small, waterproof plastic guide introduces the signs of scuba diving : those used by major diving schools, and others that are less academic (tech diving, sea creatures, etc.). Altogether, nearly 200 signs are presented with the help of photos, each accompanied by a QR code directing the reader to a video. 

• Totally waterproof 
• Multilingual (5 languages) 
• 200 signs packed into 36 pages 
• Format : 11,3 x 14,2 cm
• Weight : 110 g 
• ISBN number 979-1096592-05-0