AVAILABLE TO U.S. CUSTOMERS ONLY . World's first app-controlled vibrating nipple clamps. Adjustable clamping force design (tightening the screw loosens the clamping force) Included bra clip and necklace for increased stability and public play wear.       The bra clip is more suitable for public play.      The necklace is more suitable for scenarios where you are naked or not wearing a bra, such as cam models. Customizable light color for the Lovense logo via Lovense app settings. Small discreet design suitable for a variety of situations such as public play, camming, solo play, foreplay and sex. IPX6 waterproof. Lovense app control, camming compatible, etc. Sound-activated vibrations. Sync to music. Compatible With: iPhone/iPad/iPod Touch iOS 11.0 and later. Android 5.0 and later (with Bluetooth 4.0 enabled) Mac (with Bluetooth 4.0 enabled) Windows PC (needs a Lovense USB Bluetooth Adapter to connect) IPX6 Waterproof. USB rechargeable - 1.5-2 hours continuous use. One Year Warranty. Prohibited selling platforms includes but are not limited to: Amazon, eBay, including all 3rd party marketplace sites, even if they are operated and controlled exclusively by the authorized re-seller.Rebates, coupons, credits, percentage discounts or any manner of discounting which results in a net price in cart below Lovense MAP pricing regardless of circumstances will be considered as not complying with the MAP policy.