Topmedi CH-F331 16-Channel In-Ear Hearing Aid with LED Charging Case 180h Standby 5 Volume Levels 4 Scene Modes
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| Model No. | CH-F331 |
| Product Name | In-Ear Hearing Aid |
| Type | In-Ear / Ear Canal Type |
| Fitting Range | For Air Conductive Hearing Loss |
| Max OSPL90 | ≤112dB + 3dB |
| High Frequency Avg OSPL90 | 110dB ± 4dB |
| Full Gain (High Frequency Avg) | 26dB ± 5dB |
| Total Harmonic Distortion | ≤5% + 3% |
| Frequency Response Range | 300Hz – 5000Hz |
| Equivalent Input Noise Level | ≤22dB + 3dB |
| Current Consumption (Hearing Mode) | ≤2.5mA |
| Charging Voltage | DC 5V / 1A |
| Charging Port | Micro USB |
| Battery Type | Rechargeable Lithium Battery |
| Standby Time | Up to 180 hours |
| Number of Channels | 16 Channels |
| Volume Levels | 5 Levels (0-1-2-3-4-5, default level 4) |
| Scene Modes | 4 Modes (General / Outdoor / Indoor / Movie) |
| Bluetooth Version | BT5.3 |
| Bluetooth Name | CH-F331 |
| Bluetooth Frequency | 2402 – 2480 MHz (2.4GHz ISM band) |
| Bluetooth Range | 10 meters (typical) |
| Operating Environment | Temperature: 0℃~40℃, Humidity ≤80% |
| Storage Environment | Temperature: -20℃~55℃, Humidity ≤93% |
| Waterproof Level | IPX0 (Not waterproof) |
| Power Supply Type | Internal Power Equipment |
| Applied Part | Type B |
| EMC Classification | Group 1, Class B (GB 4824) |
| Accessories | Charging Case, Eartips (S/M/L), Charging Cable, User Manual |
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Product Details
Safety and Compliance
The CH-F331 complies with CE and ISO standards for medical devices. It features Type B applied part classification and meets electromagnetic compatibility requirements per YY9706.102-2021 and GB/T 25102.13-2010. Proper precautions include avoiding moisture, high temperatures, and strong electromagnetic fields.
User-Friendly Operation
The hearing aid automatically powers on when removed from the charging case and powers off when placed back inside. Volume adjustment is simple with 5 levels (0-1-2-3-4-5, default level 4), and the device remembers the last volume setting for convenience.
Package Contents
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CH-F331 Hearing Aid (Left/Right)
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Charging Case
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Eartips (Small, Medium, Large)
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Charging Cable (Micro USB)
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User Manual (with Warranty Card)
The Topmedi CH-F331 is the ideal solution for seniors and adults seeking a reliable, easy-to-use, and comfortable hearing aid that enhances communication and quality of life.
Superior Sound Quality
Equipped with an imported multi-band chip, the CH-F331 subdivides multiple audio sources and independently controls different high and low frequencies with gain compensation. This ensures precise sound reproduction with high fidelity. The frequency response range of 300Hz to 5000Hz captures critical speech frequencies, while total harmonic distortion of ≤5%+3% guarantees clean audio output.
Intelligent Adaptive Performance
The CH-F331 automatically adjusts frequency modulation, noise reduction, and voice capture based on environmental changes. No manual debugging is required—simply wear it and hear clearly. With 4 scene modes (General, Outdoor, Indoor, and Movie), users can optimize their listening experience for any situation.
Convenient Charging Case with LED Display
The innovative charging case features an LED digital display screen showing real-time battery percentage. The magnetic charging design makes storage effortless—hearing aids automatically start charging when placed inside. The case functions like a mobile power bank, providing up to 180 hours of standby time.