Height: 5.52 mm. Vibration Frequency: 28800 per hour. We strive to provide you with the hottest deal on the internet. We select only the hottest items for our customers, test and understand the item we sell, Photos are of the actual item/s for sale. And most importantly we respect our customer. All questions are answered within 24 hours from our professional customer service staff. Thanks for your viewing and support. Most of the cost you are noticing actually comes from the expense of high quality packing, advanced audit testing, and rigorous quality control. We stand by our policy to ensure you get the best service no matter where you are in the world. Please understand that due to the complexity of global logistics occasional uncontrollable delays may occur. If you find the product is defective which is rarely happen, you can return the defective products 3 days from the date you receive the product. All return must in brand new condition and with all instruction, box and original in the box as it arrival. Upon receive of your product, we will examine the item. Once you completed the checkout, you will not be able to combine additional auctions. Simply wait until all of the auctions are ended. A brand name item may be referred in our listing, and pictures of such item may be displayed in our listing to demonstrate how our product interacts with such an item. Unless otherwise specified, our listing doesn’t include the displayed brand name item. Please read our listing carefully on what item is included.