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Awei A990BL - Headset Overview and Components; Component Identification; PCB Button Operation; Product Specifications

Awei A990BL
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Function Introduction
The latest technology of CSR,and backward compatibility V4.0, V3.0, V2.1, V2.0, V1.2, V1.1.
Internal integrate 80MHz RISC MCU and 80MIPS Kalimba DSP, However Bluetooth 3.0 the
maximum support to 64MHz RISC MCU and 64MIPS Kalimba DSP.
This product supports Profiles:
HFP v1.6 wideband speech (HD voice ready)
HSP v1.2
A2DP v1.2
AVRCP v1.4
CVC Version 6.0
Effective distance: 10metres
Work frequency: 2.402-2.480GHz