SENA SF4 With Dual Speakers Intercom

For Riders Looking To Communicate In Small Groups, The Sf4 Is Equipped With 4-Way Intercom Over 1.2 Kilometers (0.8 Miles). The Sf4 Let Riders Enjoy Smartphone Connectivity. Riders Can Listen To Music And Use The Intercom Simultaneously Using The Audio Overlay™ Feature. Please Note That Audio Overlay Works Best With Android Devices, While Ios Offers Limited Functionality. Specifications: General: - Talk Time: 13 Hours - Operating Temperature: -10°C - 55°C (14°F - 131°F) Dimensions: - Hd Speaker Driver Unit: 40 Mm - Thickness 11.6 Mm - Standard Speaker Driver Unit: 32 Mm - Thickness 4.5 Mm - Main Module: 73.3 Mm X 38.7 Mm X 16.6 Mm (2.9 In X 1.5 In X 0.7 In) - Wired Boom Microphone: Length 183 Mm - Wire Between Speakers: Length 590 Mm - Weight: Main Module 35 G (1.23 Oz) Bluetooth: - Bluetooth 4.1 - Headset Profile (Hsp) - Hands-Free Profile (Hfp) - Advanced Audio Distribution Profile (A2dp) - Audio Video Remote Control Profile (Avrcp) Intercom: - Working Distance: Up To 1.2 Km (0.8 Miles) In Open Terrain Audio: - Advanced Noise Control™ - Built-In Sbc Codec - Wide Volume Control Sample Rate: Max. 48 Khz (Dac) Fm Radio: - Built-In Fm Radio With Rds Af (Radio Data System Alternate Frequencies) - Radio Region: Worldwide - Radio Frequency Specifications: 64 ~ 108mhz - 10 Preset Station Memory With Automatic Scan Function Battery: - Charging Time: 1.5 Hours - Quick Charge: 30 Minutes Of Charging Equals 4 Hours Intercom - Type: Lithium Polymer Battery Certificates: - Electronics: Ce, Fcc, Ic