In-Ear Earphones - Universal - Wireless Headphone Folding Stereo Headset USB Bluetooth 5 Noise Adapter Highlights Universal Wireless Headset Folding Stereo Headset USB Bluetooth 5 Noise Adapter Folding Wireless Stereo Headset USB Bluetooth 5 Adapter noise The product is shipped based on main product page image color or size. Folded Stereo Headphone Wireless USB Bluetooth 5 Noise Reduction Earphone Adapter with Mic Xiaomi Samsung TV Mobile | Bluetooth listening and headphones Version of Bluetooth: V5.0 Frequency: 2.40GHz-2.48GHZPower: 4 DBM, Class 2 Range: 10-15Messitation: 112 DBFeQuency: 20 Hz - 20 kHzs/N Rate: 70 dbdistortion: 0.10% Size of the speaker: 40 mmmtransfer Protocol: support A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5 Talking Time: About 12-15 hours mulated time: about 10-12 hours Hours charging time: 2-3 hours swamp: 40 Temperature of maperate: -4~+131f (-20~+55c)