Alpha-X Black Replacement USB Charging Cable for Fitbit ONE (12cm) please note this is third party charger , not officail charger, it is a little bit different in size, material and appearance than the official charger it was designed with golden USB 2.0 and charger pins, TPU material, durable and strong USB 2.0 connector charges fast, can charge the fitbit one in full battery in mintues only for fitbit one, not for flex, force or any other models. no reset function Slim compact design, Fitbit one device not included