Model Number: Coofone-#3568 Brand Name: Coofone Key Specifications/Special Features: Ultra slim, credit card size, easy to carry and convenient to use. RAM 24MB, ROM 32MB. It's ultra-small and lightweight, fun to play with as a backup phone. It is the size of a credit card and like 3 credit cards thick, so it fits very well into a wallet.0.96 inch bright blue OLED screen, good for eyes. Language option: English, Spanish, Portuguese, RussianBasic functions: handsfree/phonebook/call center/messaging/file manager/settings/profiles/services. The maximum amount of inbox messages it can store from text messaging is about 40.Measures 85*55*5.9mm, 350mAh capacity. Package includes: 1 x mini cellphone, 1 x USB cable. Easy to insert a standard-sized SIM card, but it takes a little care to get the back open and insert a memory card.Bluetooth 3.0, Bluetooth dialer, you can dial numbers or view contacts stored on the connected device via Bluetooth, work with AT&T, T-Mobile, but not with Verizon. You will need a standard SIM card, not a micro SIM card. It only works in a 2G GSM network, not CDMA network. You can customize the ring tone. Comes with a user manual in English. No Bluetooth headphone support. The Bluetooth effective distance is about 10 meters.