IS ICStation 4Bits Digital Clock DIY Electronic Assemble Soldering Kit AT89C2051 FR-4 PCB Board Solder Tool

This soldering practice project is a digital clock DIY assemble kit, need users to finish the assemble and soldering process. Specifications: Working Voltage: DC 3V-6V Digit: 4 Bits PCB Board Size: 52x42x1.2mm/2.08"x1.68"x0.05" (L*W*T) Accuracy: ±1s Master Chip: STC11F02E Functions: 1, Seconds correction; 2, Switch to every minute independent display interface whole point of time, 8-20 o'clock chime can be turned off; 3, Two alarm settings, user can turn off the alarm function. Feature: 0.56" red LED module; Military grade FR-4 PCB board, thinckness 1.2mm/0.05", large solder joint and pre-marked electronic components name; Accurate travel time, the error range within -1 to +1 second every 24 hours. Package Included: 1 x 6 Bits Alarm Clock Kit 1 x 3.5mm/0.14" USB Power Cable -------------------??Warm Tips??------------------- 1, Please view and download the English PDF instruction in the Product Information - Technical Specification - Installation Manual [pdf ] 2, Please make sure all components in right dirction and right place; Please check whether pseudo and float welding, this is very important in testing. 3, If you can not find the English PDF instruction or have any question for order, please make sure to write an email to our service team. 4, Welcome science schools to inquiry for bulk purchasing, hope to built long term cooperation relationship between us. 5, All messages would be replied within 12 hours as Technical Support, please rest assure to purchase and test items at Icstation.