Container for pressurized fluid, in particular a gas cylinder, having a given internal volume, comprising a fluid distribution valve comprising: - a member for selecting the flow rate able to adopt a plurality of distinct positions each corresponding to a given fluid flow rate between 0 and 30 L/min, said member for selecting the flow rate being able to be manipulated by a user in order to select a desired flow rate, - and an electronic device comprising: ■ means for measuring pressure in order to measure the pressure of the fluid contained in the fluid container, ■ microprocessor -based data processing means for processing at least some of the pressure measurements taken by the means for measuring pressure and calculating a remaining fluid, and ■ display means for displaying the remaining fluid calculated by the data processing means, characterized in that: - the means for measuring pressure are configured to take a plurality of successive pressure measurements (P 1...P n), said successive pressure measurements (P 1...P n) being repeated at a given frequency between 5 and 300 seconds, these pluralities of successive pressure measurements (P 1...P n) forming blocks of pressure measurements, and - the data processing means are configured to determine the remaining fluid by determining at least one pressure variation based on said blocks of pressure measurements (P 1...P n) measured by the means for measuring pressure at the given frequency and at least one additional parameter chosen from among the position of the member for selecting the flow rate, the temperature of the fluid and the volume of the fluid container. - a member for selecting the flow rate able to adopt a plurality of distinct positions each corresponding to a given fluid flow rate between 0 and 30 L/min, said member for selecting the flow rate being able to be manipulated by a user in order to select a desired flow rate, - and an electronic device comprising: ■ means for measuring pressure in order to measure the pressure of the fluid contained in the fluid container, ■ microprocessor -based data processing means for processing at least some of the pressure measurements taken by the means for measuring pressure and calculating a remaining fluid, and ■ display means for displaying the remaining fluid calculated by the data processing means, ■ means for measuring pressure in order to measure the pressure of the fluid contained in the fluid container, ■ microprocessor -based data processing means for processing at least some of the pressure measurements taken by the means for measuring pressure and calculating a remaining fluid, and ■ display means for displaying the remaining fluid calculated by the data processing means, - the means for measuring pressure are configured to take a plurality of successive pressure measurements (P 1...P n), said successive pressure measurements (P 1...P n) being repeated at a given frequency between 5 and 300 seconds, these pluralities of successive pressure measurements (P 1...P n) forming blocks of pressure measurements, and - the data processing means are configured to determine the remaining fluid by determining at least one pressure variation based on said blocks of pressure measurements (P 1...P n) measured by the means for measuring pressure at the given frequency and at least one additional parameter chosen from among the position of the member for selecting the flow rate, the temperature of the fluid and the volume of the fluid container.