The battery is compatible with headlamp HC90. It is a little hard nevertheless out you can remove the heat shrink sleeve which is about to gain a few 1/10 mm in diameter and make operation easier. Under the thermo jacket. you will see that it is a Pa
Quality at the appointment. Of good quality associated with a frontal X LM 1600 LM CREE T6 LED. Lighting takes several hours. Recommended for cyclists riding at night (in addition to approved lamp)