New M99 Up Bluetooth Earphones V5.2 Stand by Long In Ear Extra Large Battery V9 Upgraded Business Edition

--Congratulations on finding it-- Advantages, incoming materials, and honest service Mixed batch, sufficient, stable quality, OEM/ODM We specialize in creating a high-quality product chain for our customers, providing comprehensive pre-sales and after-sales services, and offering product images and specifications, Improve high-quality and stable products, place orders in small batches and multiple batches, with no threshold, Welcome merchants, traders, merchants, Taobao, EBYE, etc. to negotiate business and consult Welcome new and old customers to visit and guide factory inspection and quality inspection Parameters: Bluetooth version: V5.2+EDR Distance: 10 meters Call time: around 100 hours Listening time: about 88 hours Earphone battery: 350MAH Wireless frequency: 2.4GHz Protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10 meters Charging voltage/current: 5V/1A Charging time: approximately 2 hours Standby time: 2220 hours Horn impedance: φ 8MM 32&; Mic sensitivity: -42Db Working temperature: -10-50 ℃ Package size: 14.3 * 9 * 2.5CM Complete set weight: 46G Earphone weight: 15.2G Earphone size: 8.2 * 4.8 * 2.2CM