Écouteurs Bluetooth sans fil avec microphone, cache-oreilles de l'université Huaqiang de Pékin, écouteurs de jeu, basses lourdes

Product parameters Bluetooth version: 5.0 Bluetooth chip: Jerry Playtime: 10H Standby time: 180H Charging time: 2-3H Battery: 400mAh Horn parameters: 40mm 32 ohms Sensitivity: -58 ± 3DB Frequency response range: 20Hz-20KHz Wireless effective distance: 10 meters TF card: 32G Product colors: black, white, black red, black blue, gold Earphone size: 170MM wide and 173MM high. Earmuff diameter: 75MM Color box size: 14.5 * 8.7 * 13.6CM Weight with packaging: approximately 270g Box packing: 45 PCS Outer box size: 46 * 46 * 42 CM Net/gross weight of packing: 7.65/12.7kg Accessories: USB charging cable 3.5mm audio cable Customer Notice working hours 1. The customer service is available from 08:00 to 21:00 on Monday to Saturday. For inquiries during other times, please leave a message. The customer service will reply to you when they are online. 2. Key customer hotline: Mr. Chen 138 2657 4332 Transaction method For customers with large quantities or needs, payment can be made directly online by placing an order, or by contacting the merchant to negotiate and draft relevant payment agreements. If you need to learn about the product first, you can directly take a sample or contact customer service for consultation. delivery 1. If the quantity is small (default to Zhongtong), direct delivery will be used for large quantities, depending on the situation. 2. If there are any other special requirements, please contact customer service to make a note. Payment made before 5:00 pm on the same day can generally be shipped on the same day. After sales standards 1. After receiving the product, it can be returned or exchanged without reason for 7 days. Merchants who do not have quality issues are not responsible for any round-trip shipping costs under any circumstances. (including dissatisfaction with the product, human damage, etc.), returns are not accepted. 2. Long term customers can accumulate a certain quantity and send it back (the seller bears the shipping cost for product quality issues). After receiving the goods, our store will replace them before sending them out. 3. The products sold in our store are directly operated, with small profits but high sales, and guaranteed quality. (Most of our products have a six-month warranty)