Street Rock 2 Way Connect and SD Card Wireless Headphone delivers crisp, balanced sound with reliable wireless performance for work, study, travel, and workouts. Designed for all‑day comfort, it pairs quickly, holds a stable connection, and keeps you focused with clear audio and an ergonomic fit. Perfect for music, calls, and meetings. Key details: Bluetooth and Wired Connecting SD Card supported; FM supported Wireless Version: V5.0; Transmission Range: 10M Listening/Playing Time: 5 Hours Standby Time: 300 Hours Charging Time: 1.5 Hour; Battery Type: Rechargeable Battery Battery Capacity: 200mAh; Mic: Ø40mm; Sensitivity: 110±3dB S.P.L at 1KHZ Impedance: 4Ω; Frequency Response: 20Hz-20 KHz Rating: 5W×2.