Support UHF tag protocol ISO18000-6C Support ios, android and other intelligentsystem platforms. Communication interface: 3.5mm audio interface (common headphone jack) Read distance: 50cm（depend on tag size） Work time: continuous 3 hours,query over 30000 times. Battery capacity：550mA Charge method：USB 5V/0.5A，charge time 2 hours. Work environment temperature: -20℃~+60℃ Material: ABS+PC engineer plastic. Size：42×48×15mm Weight：35g