push to talk over cellular

{"title":"Grandtime 1.3 Ghz Push To Talk 4G Lte Radio With 2W Speaker","imgUrl":"https:\/\/img.chinax.com\/nimg\/4f\/57\/7303c999bdbd6b1678c9cea7f076-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Grandtime","Model Number":"F39","Minimum Order Quantity":"2 units","Delivery Time":"8-12 work days","Certification":"17-210701","Place of Origin":"China-mainland","Payment Terms":"T\/T\uff0cPaypal","Supply Ability":"5000 units per month","Packaging Details":"Neutral packaging 16*9.8*6.8cm \/unit 42*31*18cm \/ctn 20units\/ctn","CPU":"1.3 Ghz","Standby time":"920 hours","Loud speaker":"2W","Port":"Shenzhen,China","GPS":"Beidor + GPS","Barttery":"Polymers , 5000mAh","Touch screen":"G+FF","T-card":"Option , up to 128 GB","Network":"Dual nano sin-card","OS":"Android 9.0","Memory":"2GB+16GB","Communication distance":"unlimited","Lora":"Built-in","Camera":"Front camera : 5MP ; Rear Camera : 13MP"}}