Top Quality 2in1 One Touch Diamondnite DN-1 Dual Diamond and Moissanite Tester. Specifications: 1. Simple one step testing that will distinguish between diamonds, simulate, and moissanite 2. Easy to use visual and audio indicators 3. Fast warm up and recovery time 4. Power by 9V AC adapter 5. Auto shuts off automatically after three minutes to save the battery 6. Completely portable 7. Weight: 80g Includes: 1 x Diamond Tester 1 x Adapte Note: 9V Battery is NOT included. Top Quality Item Guarantee !!!