Complete Point of Sale with both Online/Offline sync option

Hi, Am in need of Point of Sale system with below features: Cloud POS(multiple business - SAAS) which works even though there is network issue in client place and the billings should sync post network availability. PLEASE QUOTE ONLY IF YOU HAVE READY MADE POS. Hardware Integration - Barcode scanner - Cash Register - Label printing - Weighing Scale - Different types card integration - Billing printer Feature: BILLING SALES MODULE Counter Billing Sales Bulk Sales Order Sales Return/Exchange Home Delivery Bar Code Interface Cancellation Reason Management Payment Options (Cash/Card/Complimentary) Discount and Tax Options Guest Feedback Form PURCHASE MODULE Purchase Order Purchase Received Purchase Return Supplier Management STOCK & INVENTORY MODULE AND REPORTS Item Master Item Unit Master Store Master Tax & Discount Master Item Group/Categories Supplier Details Current Stock Details Store Wise Stock details Add and Update Stock Master Opening and Closing Stock Details Report (Stock Register) Stock Reports (Product Wise) Wastage (Product Loss) Reports MIS REPORTS <Sales> Print Daily Net Sale Summary (Sales Register) Periodically Sales Report (From Date to Date) Item Wise Sales Report Bill no Wise Report Counter Wise sales report Customer Wise Sales Report Cashier Wise Sales Report Sales Return Register Discount Details Report Tax Summary Reports <Purchase> Purchase Register Purchase Return Report Supplier Wise Item Wise Purchase Report ADMIN AND MASTER MODULE User Master/Cashier Master Add and View Expense Details For Shop Customer Payment Details Database Back up