Features (FL601):
1) Anodized aluminum body finished by CNC machine
2) IC control: 3 LED-12 LED-off
3) O-ring sealed and water resistant
4) Constructed and designed to withstand blows or jarring
5) Low power consumption
6) Long LED lifetime (over 100,000 hours working life)

Features (FL606):
1) Anodized aluminum body finished by CNC machine
2) 4 modes: 7 LED-19 LED-flash-off
3) O-ring sealed and water resistant
4) Constructed and designed to withstand blows or jarring
5) Low power consumption
6) Long LED lifetime (over 100,000 hours working life)