This machine is not as big as a lighter, with a length of 6.2 cm, a width of 2.4 cm and a thickness of 1.17 cm You can make and receive calls, send and receive text messages, ringtones for incoming calls, or mute Pluggable mobile GSM or Unicom GPRS card to make calls, send and receive information Bluetooth connection with communication devices such as smart phones without inserting a card When used as a bluetooth dialer, you can answer and hang up calls and listen to music wirelessly Can store 500 phone numbers, address book Bluetooth one-key synchronization low radiation This machine is an independent small mobile phone, you can make and receive calls directly by inserting the card The phone has a lanyard hole to hang the lanyard, it's really small, very small Full set of 40g, super light, not heavy with ears