Sena SF4 Motorcycle Bluetooth Communication System Dual Speaker Intercom

Sena SF4-02 Motorcycle Bluetooth Communication System With Dual Speakers 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. 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