TG-GM311
1. One-touch switch, adjustable volume level, simple operation.
2. Recycled charging, saves money and is convenient.
3. Medical-grade soft silicone earplugs, comfortable to wear.
4. Can be worn on either ear.
5. Compact storage box for easy portability when traveling.
6. Long-lasting battery pack, supports half a month of standby time.
Maximum OSPL90: ≤ 125DB ± 5DB
Average OSPL90 at high frequencies: ≤ 120DB ± 5DB
Maximum sound gain: ≤ 35DB ± 5DB
Frequency response range (not narrower than): 400HZ - 4500HZ
Total harmonic distortion: 7% ± 3%
Equivalent input noise level: ≤ 30DB ± 5DB
Battery current: ≤ 2 milliamps
Rated voltage: 3.7 v
