What are requirements of Lifejacket Light as per LSA Code ?

Each lifejackets light shall : 

1. Have a luminous intensity of not less than 0.75 candela. 
2. Have a source of energy capable of providing a luminous intensity of 0.75 candela for a period of 8 hrs. 
3. Be visible over as great a segment of the upper hemisphere as a practicable when attached to a life jacket. 
4. Be provided with a manually operated switch. 
5. Not be fitted with a lens or curved reflector to concentrate the beam. 
6. Flash at a rate of not less than 50 flashes per minute with an effective luminous intensity of at least 0.75 candela.