Novos fones de ouvido Bluetooth de condução óssea M520 atualizados com clipe na orelha estéreo esportivo empresarial

--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 M520 Bluetooth earphone clip on ear stereo bone sound transmission concept sports upgrade business model Bluetooth version: V5.2+EDR ultra-low power consumption 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: 720 hours Call time: approximately 48 hours Listening time: approximately 26 hours Horn impedance: φ 8MM 32&; Mic sensitivity: -42Db Working temperature: -10-50 ℃ Earphone weight: 10G Complete set weight: 36G Earphone size: 7.7 * 4 * 0.9CM Complete set size: 12.4 * 8 * 2.6CM Accessories: earphones * 1, charging cable * 1, instruction manual * 1