**Product Specifications:**
1. **Brand:** 1MORE
2. **Product Name:** 1MORE HQ20 Study Headphones with Hearing Protection
3. **Safety Certifications:** FC, SRRC, FCCID, MIC, CE, RoHS, NPS, WEEE, CERED, ROHS2.0, WEEE, IC, PAHS, TSCA, ICID, REACHSVHC, TPCH, FCC&ICSAR, MA
4. **Noise Cancellation:** Full-coverage noise-isolating ear cups for enhanced focus and reduced environmental noise, creating an immersive learning environment
5. **Comfortable Design:** Features protein sponge ear cushions, pressure-relieving headband padding, and adjustable headband for a comfortable fit during extended wear
6. **Suitable for All Ages:** Ideal for students from elementary to university level, suitable for various learning activities and exam preparations
7. **Battery Life:** Up to 65 hours of playback time on a full charge, with 5 minutes of quick charge providing 2.5 hours of use
8. **Dual Device Connectivity:** Supports simultaneous connection to two devices for seamless switching between platforms
9. **Control Buttons:** Volume +, Next Track, Power On/Off, Play/Pause, Volume -, Previous Track
10. **Connectivity:** Type-C interface, LED power/connection indicator, microphone input
11. **Package Contents:** 1 pair of headphones, 1 Type-C charging cable, 1 user manual
12. **Specifications:**
- **Model:** HQ20
- **Colors:** Sakura Pink, Cream White, Starry Black, Glacier Blue
- **Weight:** 181g
- **Dimensions:** 153 x 45.4 x 184.5mm
- **Battery Capacity:** 500mAh
- **Charging Time:** 2 hours
- **Playback Time:** Up to 65 hours
- **Speaker Impedance:** 32Ω
- **Communication Distance:** 10 meters (in open environments)
- **Bluetooth Version:** Bluetooth 5.3
- **Bluetooth Profiles:** HFP/A2DP/AVRCP
- **Input:** 5V-1A
- **Maximum Power:** 24mW
- **Operating Temperature:** 0°C to 45°C
- **Frequency Band:** 2.400GHz to 2.4835GHz
- **Note:** Playback time is based on AAC format at 50% volume and may vary depending on device settings, environment, and usage conditions
(Note: Specifications are based on laboratory testing data.)