Features & Specs:
Transmitter Frequency / Channel Amount:2370-2510MHz;8CH / 8CH
Output Power: 500mW/27dBm
2.4G Technology
Built-in microphone audio pick up device
ANT connector: RP-SMA
Dual AV output
Video output: 1Vp-p 75Ω
Audio output: 1Vp-p 600Ω
Power supply: 7-14V
Current Supply: 300mA
Dimension: 55mm * 26mm * 17mm
Weight: 38g (with antenna)
Package size: 14 * 7 * 2cm / 5.5 * 2.8 * 0.8in
Pakcage weight: 53g / 1.9oz

Package list:
1 * Boscam TS321 2.4Ghz 500mW Wireless AV FPV Transmitter
1 * 2.4G Antenna
2 * Connector