Product Details ：Working Distance:1000m For Two Riders (under Ideal Environment)working Frequency: 2.4ghzbluetooth Version: 5.1supported Bt Protocol: A2dp And Avrcpoperating Range: Up To 10 Meters For Cell Phonesbattery Type: 1000mah Rechargeable Lithium Polymerstandby Time: Up To 500 Hourstalk Time:up To 28 Hours In Phone Call Intercom Mode;up To 33 Hours In Music Modecharging Time: About 2 Hourspower Adapter Requirement: 5v/1acharging Port: Type-coperating Temperature: 41f-104f(5c-40c)storage Temperature: -4f-+122f (-20c-+50c)color: As Shownmaterial: Abspackage Contents:1 X For Host1 X Usb Cable1 X Headphone Cable1 X Hard Mic Soft Mic1 X Flat Mount1 X Clip Mount1 X Buckle Package1 X Screwdriver1 X Fastener Tape1 X English Instruction Manualonly The Above Package Content, Other Products Are Not Included.note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.