3Rd Generation August Smart Lock In Silver. Product Details Secure keyless entry with your phone. August Smart Lock, 3rd Gen technology - Silver. Standards: Bluetooth Specification v4.0 (Bluetooth Smart). YOUR LOCK ON THE OUTSIDE, A SMART LOCK ON THE INSIDE: August smart locks replace the thumbturn on the inside of your door, making your regular deadbolt smarter, more secure and way more convenient. Keep the outside of your door the same, and your keys just in case (but you won?t need them). GET IN AND OUT WITH THE AUGUST APP: No pockets? No problem. Lock and unlock your door with the August app on your phone or Apple Watch, and leave your house keys behind. AUTO-LOCKS AND UNLOCKS: Auto-Unlocks as you get home for totally hands-free unlocking -- great for when your arms are carrying kids or groceries. With Auto-Lock and DoorSense, your home automatically secures once your door is closed, or after a set amount of time (optional feature). EASY TO INSTALL ON ANY DOOR: Even if you?re not so handy, installation only takes about 10 minutes. August locks fit perfectly on most single cylinder deadbolts. RENTER-FRIENDLY: Renting your place? Home improvement isn?t just for homeowners. Modernize your apartment?s lock and then take it with you when you move -- the old deadbolt thumbturn can be easily reinstalled. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.