Package included: 1 x Diamond selector tester 1 x Protected leather bag 1 x Texting Platform 1 x User manual Note：9V Battery not included Description: - Powered by DC 9V battery x 1 (not included ) Operation method: 1. Turn on the power, the power indicator light, the instrument began to warm up, a few seconds later, the instrument can be used. 2. Place the bare drill in the appropriate hole in the support tray with the table facing up. Have been embedded bare drill do not need, you can hold. 3. According to the weight of the measured bare drill and the location of the temperature, light a number of light-emitting diodes. 4. Remove the probe sheath, holding the instrument, the right index finger touches the instrument back cover conductive plate; the probe vertically contact the table of bare drill lightly. 5. Carefully watch the reaction of the instrument, if the remaining yellow light-emitting diodes light, when the light to the nine diodes, and accompanied by a beep, indicating that the diamond was tested for real diamonds. Conversely, if there are fewer than nine diodes lit and no beeps are heard, false diamonds or counterfeit products are used.