Power Source: Corded Electric Style Digital Color: Blue; Brand: Unknown 45 grams in weight Regarding this item's specifications: Name of brand: Pro'sKit Number of Brand: NT-305 Composition: ABS Electric testing pen type Temperature range for operation: -10 to 50 Range of Measurement: Power: 2 * Lithium cell CR927 (3V) (included) DC: 12V 36V 55VAC: 70-250V LED Display