Shenzhen Grandtime Technology Co., Ltd.
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Grandtime F2 body camera 130+°degree Infrared night vision HD video wireless transmission Audio and video walkie talkie
Grandtime F36 4G LTE Android walkie-talkie network walkie-talkie smartphone Zello PTT radio enhanced antenna mobile phone
Grandtime F25 4G LTE Android walkie-talkie network walkie-talkie smartphone Zello PTT radio enhanced antenna mobile phone
Grandtime F22 3G LTE Android walkie-talkie network walkie-talkie smartphone Zello PTT radio enhanced antenna mobile phone
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