China Cell Phone Watch GSM Tri-Band This tri-band cell phone watch has all the features your customers demand in a heavy-duty tri-band cell phone, and they're always at arm's length. It features a 1.3-inch TFT LCD screen, touch-screen handwriting support, MP3/MP4 playback, 10 different interface languages, alarms, video games, and a wide range of additional functions. It's unlocked for use with any cell service carrier, so you can sell it to all of your customers today.
In mobile phones, dual-band and tri-band refer to functionality that allows a cell phone to support either two or three frequency bands out of the four major GSM (TDMA) bands - 850/900/1800/1900 MHz.
GSM 900/1800 bands work in Europe, Africa, Asia, and Brazil GSM 900/1800/1900 bands will work on at least one network in most countries around the world except for some networks that only support 850MHz.
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