Volkano Marvel Spider-Man 3D Bluetooth Headphones

Feature KID-SAFE VOLUME LIMIT - Capped at 85 dB for safer listening COMFY & FOLDABLE - Cushioned earcups and headband for all-day wear BUILT-IN MIC FOR CALLS - Clear voice pickup for chats and classes LONG PLAYTIME - Up to 30 hrs (LED off) or 10 hrs (LED on) at 50% volume BLUETOOTH 5.3 - Stable wireless connection up to 10 m MULTIPLE PLAYBACK OPTIONS - Easy controls with fun LED effects Technical Specifications Materials: ABS & PU leather Bluetooth: v5.3 (Profiles: SPP, SMP, ATT, GAP, RFCOMM, HFP, A2DP, AVRCP) | Range: ~10 m Drivers: 40 mm | Impedance: 32 | Frequency: 20 Hz - 20 kHz Sensitivity (limit): 85 dB Battery: 3.7 V / 800 mAh | Standby: ~48 hrs Charging: USB-C, 5 V 0.5 A | Time: ~2-3 hrs Playback (50% vol): LED on ~10 hrs / off ~30 hrs Playback (100% vol): LED on ~9 hrs / off ~21 hrs