COOMAX A680 Invisible Earpiece Kit
The skin-tone A680 receiver fits inside the ear, making it hard to see from the outside when worn. The 3.5 mm neckloop and its call button are separate.
RF mini earpiece kit with a 3.5 mm connection. Ask about the included microphone and compatibility.
Request a quoteProduct description
The A680 pairs a miniature inductive receiver with a neckloop that plugs into a standard 3.5 mm audio jack. The neckloop carries audio to the earpiece and includes a microphone with a call button. The set includes the earpiece, neckloop and one 337/SR416SW battery.
Connection and compatibility
The neckloop plugs into the audio source and transmits sound to the receiver by magnetic induction. This gives the earpiece a wireless connection to the loop while the loop itself uses a cable. If your device has only USB-C or Lightning, check that your audio adapter also supports microphone input for calls.
Practical uses
For stage cues or spoken prompts from a compatible wired source, the A680 combines a shaped in-ear housing with an analog magnetic receiver. Nearby electronics can cause interference, and a faint background noise may be audible. Its primary use is speech.
Before ordering
The receiver measures 5 × 7 × 10 mm and weighs 0.8 g. The listed operating time is 3–5 hours on one 337/SR416SW battery. If you plan to use a radio or another device with a specialized connector, send us its model so we can check the plug and microphone wiring.
Product photos
Product specifications
- Model
- A680
- Connection
- RF / 3.5 mm
- Receiver
- Analog magnetic
- Dimensions
- 5 × 7 × 10 mm
- Net weight
- 0.8 g
- Battery
- 337 / SR416SW
- Battery life
- 3–5 hours
- Listed maximum volume
- 110 dB
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