Microneedle based electrochemical sensors for minimally invasive A 3D printed microneedle extraction system integrated with patterned Figure 2 from Fabrication of Multiple Channel Electrochemical Figure 2 from Fabrication of Multiple Channel Electrochemical. Product information: Product Name: multiple repairing essence Interface mode: Buckle Gear: 3 Speed: 1 gear 4100 2 gear 4700 3 Gear 5600 Color: Black Standard configuration: Host charging cable manual bayonet consumables Power on mode: Charging Charging status: charging; The light gradually shows full power; The three lights are all on Size: length 180mm * width 21mm Net content: 101g Packing list: Small black tube * 1 data cable * 1 manual * 1 Product Image: