The Talkase is a mini GSM standalone phone that snaps into an iPhone case. The $70 phone is described as a "must-have accessory for a mobile lifestyle."
Talkase is a mini GSM standalone phone and iPhone case all in one that attaches to the phone you already have. Designed by a Red Dot Award-winning designer, the Talkase phone is the size of your average credit card and features a simple, elegant and slim design not yet before seen on the market. The Talkase has up to five days of standby time and 2.5 hours of talk time, so you'll still be able to make a call even if your primary phone runs out of battery. Alternatively, you can you can sync Talkase with your existing smartphone, allowing you to make and receive calls from your smartphone on your Talkase and sync your contact list.