This one is for 40$
another one in box more new is for 50$: see the last pictures starting from 6.
**2.4/5GHZ Dual-Band Wi-Fi - Selects the optimum frequency in the 2.4GHz/5GHz spectrums, virtually eliminating interference
**Digital RF Wireless Game Sound - Uncompressed digital audio signal provides CD-quality game sound
**Amplified Audio - Enhances game sounds for a more immersive experience
**Equalizer (EQ) Presets - Multiple EQ presets including bass and treble boost combination
**Sound Field Expander Presets - Boost the sound levels on the left and right sides for better tactical accuracy
