1、It can realize full‑duplex communication, with a maximum communication distance of 1200 meters/1312yd (depending on the test environment). 2、Support 3pcs Bluetooth headset pairing, two people talk at the same time. Built‑in for DSP wind noise cancellation, environmental noise suppression. 3、Support to control mobile phone operations, such as: automatically answer incoming calls, dial out, hung up, re‑dial, and voice dialing. 4、Support V3 PLUS to enjoy the music on the phone, and conveniently control music playback, pause, up and down. 5、The built‑in high‑sensitivity FM radio can conveniently store and play favorite radio stations. 6、Built‑in 650mAh high‑capacity battery, continuous talk time can reached 12 hours. 7、IP65 waterproof level, suitable for outdoor use. Large buttons and large volume design, convenient for riding use. Item Type: Bluetooth Helmet Intercom Material: ABS Bluetooth 5.0 Support Bluetooth Profiles: HSP, HFP, A2DP, AGHSP Working Time: 15 hours Standby Time: 350 hours Lithium Battery: 650mAh (built-in) Certification: CE, FCC, TELEC, NCCWaterproof: IP65 1 x Host 1 x Headphone Cable 1 x Hard Microphone 1 x Soft Microphone 1 x Screw Clip 1 x Gasket 2 x Screw 1 x Spanner 1 x Hook&Loop Clip 1 x Usb Cable (for Android Interface) 1 x Double-Sided Tape 4 x Hook&Loop 1 x Manual