1.low cost, high satety,
2.Maintenance free lead acid calcium battery is used
3.Main light source used 7pcs of high bright and small power LED
4.Handset charger is used

Main technical specifications
1.Rated capacity 4Ah
2.Nomial voltage 4v
3.Lighting times more and equal 15
4.LED light source
a. Rated voltage 3.3v
b. Current of main light source 160
c. Current for auxiliary light source 110MA
5.Maxi lightness at 1M
a. Begin lighting 900 LX
b. Lighting 11 h 800 LX
6.Weight 850 g
7.Nos of battery cycle more and equal 300 times