I bought it from the local distributor after the montly official gathering of Hong Kong Strida Club yesterday.
cateye.com/en/products/detail/HL-EL540RC
Specifications
Dimension:114.0 X 56.0 X 53.0mm
Weight:244 grams (with bracket and rechargeable battery)
Light source:High power white SMD LED X1
Light output: 4000cd
Run time:
High mode:approx 5hrs
Low mode:approx 15hrs
Flashing mode:approx 60hrs
Battery:NiMH (AA) rechargeable battery X4
Recharge time:approx 5-7hrs
Other:Low battery indicator