Light Source:Red Laser Diode
<br />Keyboard Layout:Approx. 19mm Pitch, QWERTY Layout
<br />Keyboard Size:Approx. Width : 240mm, Height: 100mm
<br />Keyboard Location:Approx. 80mm from the bottom of device
<br />Project Surface:Non-reflective, opaque flat surface
<br />Recognition Rate:Approx. up to 350 characters per minute
<br />Operating Surface :Any firm flat surface
<br />External Power Supply :USB Power / less than 5V 500mA
<br />Battery & Capacity:Lithium-ion Polymer Battery,:600mAh(MA X) @ 3.7V
<br />Battery Operating Time:Approx. 120min
<br />Battery Charging Time:Approx. 120min
<br />Bluetooth:V3.0, HID Profile Ver 1.0
<br />Frequency Range:2402-2480MHz
<br />Channel:79
<br />Modulation:GFSK
<br />OperatingTemperature :0 ~ 35 C / 90%RH
<br />Storage Temperature:-5 ~ 35 C / ~90%RH
<br />Size (mm):78mm x 40mm x 20mm
<br />Weight (g):Approx. 60 g<p> <b><b><img src="https://contestimg.wish.com/api/webimage/584ae5c1f5bb507726aaa160-large.jpg></b></b></p>