1.Accuracy 1mm Height Adjustment 65-94cm adjustment 2.Aerospace alloy structure is lightweight and strong enough to withstand 100kg of pressure vertically. 3.Alert Call Tail Light HELP Call for Help Button Press the HELP button and the crutches will tick! 4.LED lighting function Safer traveling at night 5.Non-slip new material does not fear slippery, four feet universal support 6.Hook design anti-lost inverted design hook can bear 20Kg, grocery shopping free hands Charging mode: USB Type-C