Transfer distance 10M
Frequency:2.4GHz ISM
Version: Bluetooth 2.1
Battery capacity:370mA
Low voltage alarm signal :the red led blinked every 15 second, with warning tone

Technical Details

Size (LWH): 9.2 inches, 7.2 inches, 2.6 inches
Product Details
Product Dimensions: 9.2 x 7.2 x 2.6 inches
Shipping Weight: 0.7 pounds (View shipping rates and policies)
ASIN : B004C1Q92G