9.Transmitting power supply: USB power supply 7. Power supply mode: the headset can be recharged by lithium battery. 5. Standard 3.5mm earphone plug, supporting various devices. 6.Connection mode: one to many 6. , large caliber loudspeaker. Must the media fans! 1.Wireless mode: stereo FM 7. range: 30m Product information Name: wireless headset kst-900st 1 x headset set Coffee is equipped with a 3,5 mm stereo and cable 3. Earphone can be used as wired earphone with audio cable. Wireless cushions allow you to listen to your TV program or music without disturbing others Double channel and dual channel headphones. plus: Built-in FM receiver to listen to local FM stations. 8. Transmit USB power supply (it can be directly inserted into T V and computer, it is recommended not to directly insert charging head). 3.Transmitting frequency: 88.1mhz 4. USB transmission is easier to hide. 5.Horn size: 40mm 4.Horn impedance: 32 Ω 2. The distance is further than Bluetooth, up to 30m. Connect to any device with 3.5mm audio including smartphone, MP3 players,cds players, PCs and tablets. 1. Stereo wireless headset, solve the distance limit. Includes: Product features 2. Frequency range: 88-108MHz 8.Headset power supply: lithium polymer battery / charging Im2620 Wireless Earbuds Rose