YYK-520 second-generation Bluetooth upgraded version 5.0 hanging ear long standby sports wireless business earphone

--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 YYK-520 second-generation product information Box size: 31.5 * 29 * 42.5CM 16.5KG 100 pieces 1. Headphone parameters Bluetooth version: V5.0+EDR Wireless frequency: 2.4GHz Protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10 meters Battery capacity: 50mAh Charging voltage/current: 5V/1A Play/talk time: approximately 4 hours Charging time: approximately 1 hour Standby time: 120 hours Horn impedance: φ 8MM 32 Ω Mic sensitivity: -42Db Working temperature: -10-50 ℃ 2. Charging compartment parameters Input voltage/current: 5V/1A Battery capacity: 400mAh Gross weight: 146g Net weight: 74.5g 3. Packaging size: 145 * 81 * 25mm 4. Product List Earphones * 1, charging compartment * 1, charging cable * 1, instruction manual * 1 ear cap * 2