Vention NBFW0 Bluetooth 5.3 Earphones - TWS Ture Wireless Headphones, USB-C Stereo Sports Movement Earbuds with Mic Hi-Fi Tone Quality Headset, IPX4 Waterproof Total welding tools Military Standard: US MIL-STD 810H

Military Standard: US MIL-STD 810H military-grade standard

SNMP (Simple Network Management Protocol)

Use time: about 26 hours

Ultra-strong and durable materials

Vention NBFW0 Bluetooth 5.3 Earphones - TWS Ture Wireless Headphones, USB-C Stereo Sports Movement Earbuds with Mic Hi-Fi Tone Quality Headset, IPX4 Waterproof Total welding tools Military Standard: US MIL-STD 810HVention NBFW0 Bluetooth 5. 3 Earphones TWS Ture Wireless Headphones, USB C Stereo Sports Movement Earbuds with Mic Hi Fi Tone Quality Headset, IPX4 Waterproof Key Features Bluetooth Version: 5. 3 Bluetooth Profile: AVRCP A2DP HFP HSP Audio Codec: SBC AAC Audio Frequency Range: 20Hz 20kHz Battery Life: Up to 7 hours (earbuds), Up to 21 hours (with charging case) Charging Time: 1. 5 hours (earbuds), 2 hours (charging case) Charging Interface: USB C