Product Description: Torch Bluetooth version V5.0 Bluetooth fast charge QC3.0 Blue atmosphere light circle. Support power-off memory and Bluetooth automatic connection. Bluetooth supports A2DP, AVRCP, HFP, HSP Support U disk, T card, Bluetooth playback mode. Support lossless music formats such as APE/WAV/FLAC. Support key to wake up the mobile phone voice assistant. Private answering switch. FM stereo output. Low voltage alarm. The product supports input over-voltage protection, output over-current protection, output short-circuit protection, and over-temperature protection. Product parameters: Product net weight: 44g Product gross weight: 65g Product size: 7.1*4.3*4.8cm Technical parameter: Bluetooth version: 5.0 Bluetooth sound processing: with DSP technology and A2DP (Advance Audio Distribution Profile) function. Rated working voltage: 12V~24V Ultimate working voltage: 11-26V Output ripple: less than 200mV Orange USB port: The protocol supports QC3.0, QC2.0, Huawei FCP, Samsung AFP, Apple 2.4, etc. Output 5V/3A, 9V/2A 12V/1.5A can support 200mV step increase and step decrease. Bluetooth USB port: U disk (1A output) Input overvoltage protection: 32V Output efficiency: 91.5%~95% Overcurrent protection: 3.5A~3.7A Working temperature: 0-50 degrees Music format: MP3/WMA/WAV/FLAC Signal-to-noise ratio S/N:>40dB, measured by Tecsun Sonophone 10cm. FM emission intensity: >60dBu 10cm test result of Tecsun Sonophone. Battery voltage error: 0.5V Distortion: