RF STD：Article 3(2)_Radio_ETSI EN 300 220-2 V3.1.1 (2017-02)_Short Range Devices (SRD) operating in the frequency range 25 MHz to 1 000 MHz; Part 2: for non specific radio equipment
EMC Std：Article 3(1)(b)_EMC_ETSI EN 301 489-1 V2.2.3 (2019-11)_Part 1: Common technical requirements; Harmonised Standard for ElectroMagnetic Compatibility
Health ：Article 3(1)(a)_Health_Cenelec_EN 50360:2017_Publication Product standard to human exposure to electromagnetic fields in the frequency range from 300 MHz to 6 GHz: devices used next to the ear
Safety：Article 3(1)(a)_Safety_Cenelec_EN 62368-1:2014/AC:2015_Audio/video_ information and communication technology equipment - Part 1: Safety requirements
RF MOD：WIRELESS CONNECTIVITY_Bluetooth® <4.0_Band (in MHz)_2400 to 2483.5
Article 3(2)_Radio_ETSI EN 300 220-2 V3.1.1 (2017-02)_Short Range Devices (SRD) operating in the frequency range 25 MHz to 1 000 MHz; Part 2: for non specific radio equipment
Article 3(1)(a)_Health_Cenelec_EN 50360:2017_Publication Product standard to human exposure to electromagnetic fields in the frequency range from 300 MHz to 6 GHz: devices used next to the ear
