Check Bitcoin Address Balance Tool
BitRef will help you view the current balance of any Bitcoin address. You need only a device with the Internet and a valid Bitcoin address string. This is a safe service because it uses only public data; there is no need for login and password.
It is possible to monitor many Bitcoin addresses with one request. Just separate the different addresses with a "+" (plus) sign in the address field or in the URL. This way you can enter all your wallet addresses and monitor the entire wallet.
The tool shows the last 50 transactions for every address (or combination of addresses). It shows the date, amount and current balance for every transaction. You can also check the number of confirmations by keeping the mouse pointer over each transaction.
Use QR code to bookmark address(es) information in your smartphone or tablet. Then you can monitor your address(es) everywhere and at any time with BitRef.