Case for mobile, waterproof

Waterproof cover for small devices such as telephones, loudspeakers or microphones, for demonstrating sound propagation in liquids and the Doppler effect;
Cover made of very transparent and highly flexible plastic, air-filled edges as additional impact protection, bag can be closed and opened easily, quickly and securely using two levers, detachable neck strap
Available interior: 70x150 mm
Dimensions: approx. 220x115x15 mm
Mass: approx. 51 g