No registration, web service or cloud needed! This wallet is de-centralized and peer to peer. Display of Bitcoin amount in BTC, mBTC and µBTC. Conversion to and from national currencies. Sending and receiving of Bitcoin via NFC, QR-codes or Bitcoin URLs. Address book for regularly used Bitcoin addresses. When you're offline, you can still pay via Bluetooth. System notification for received coins. Sweeping of paper wallets (e.g. those used for cold storage). App widget for Bitcoin balance.