PARAMETER --- Input voltage range DC 5V-36V; output voltage DC 1.25V-32V continuously adjustable; max output current 5A, recommend use within 4.5A; max power 75W, recommend use within 50W. MULTIMETER --- Detect and display voltage, current, power; can be used as voltmeter, ammeter, or power meter. PROTECTION --- Over-current protection; short-circuit protection; over-temperature protection. CC & CV MODE --- Features constant current mode and constant voltage mode. OTHER FEATURES --- USB port; current mode indicator and charging status indicator; protective shell; calibration function. Color: Blue Material: PC + Metal Package Contents: 1 x DC-DC step-down converter Only the above package content is included; other products are not included. Note: Lighting and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowed error is +/- 1-3 cm.