1. Introdução
This manual provides detailed instructions for the PRYME BTH-900-MAX Wireless Dual-Muff Headset. This professional-grade headset is designed for reliable communication in demanding environments, offering dual-link capability for simultaneous connection to two-way radios, cellphones, and tablets.
Principais características:
- Noise-Reducing Condenser Boom Microphone: Equipped with a replaceable wind sock for clear audio transmission.
- Fully Integrated Wireless Technology: Provides a clean, professional, and wire-free communication experience.
- Capacidade de link duplo: Connects to both cellphones/tablets and two-way radios simultaneously.
- Broad Radio Compatibility: Works with all PrymeBLU radio adapters (V2 series), and ICOM, Kenwood, EFJ, and BK radios with internal Bluetooth.
- Dedicated Control Buttons: Separate buttons for Push-To-Talk (PTT) radio functions and cellphone (Answer/Call) operations.
- Design resistente à água: Ensures durability and reliable performance in various conditions.
- Cancelamento de ruído: Enhances audio clarity by reducing ambient noise.
- Estrutura dobrável: Allows for convenient storage and transport.

Figure 1: The PRYME BTH-900-MAX Wireless Dual-Muff Headset, showcasing its robust design and integrated boom microphone.
2. Configuração
2.1 Carregando o fone de ouvido
Before initial use, fully charge the headset. The headset includes a Lithium Polymer battery. Use the provided USB charging cable and adapter.
- Conecte a extremidade menor do cabo de carregamento USB à porta de carregamento do fone de ouvido.
- Connect the larger end of the USB cable to the power adapter.
- Conecte o adaptador de alimentação a uma tomada elétrica padrão.
- The LED indicator on the headset will show charging status (e.g., red for charging, blue for fully charged).
- Allow approximately [X hours - information not provided, user should refer to product packaging or full manual] for a full charge. A full charge provides up to 50 hours of battery life.

Figure 2: USB charging cable and power adapter for the headset.
2.2 Ligar/Desligar
- Para ligar: Press and hold the Power button (usually marked with a power symbol) until the LED indicator illuminates.
- Para desligar: Mantenha pressionado o botão Liga/Desliga até que o indicador LED se apague.

Figure 3: Headset controls showing the power button and a blue indicator light, typically indicating power on or pairing mode.

Figure 4: Headset controls showing the power button and a red indicator light, typically indicating low battery or charging status.
2.3 Emparelhamento Bluetooth
The BTH-900-MAX supports dual-link Bluetooth connectivity, allowing connection to two devices simultaneously (e.g., a radio adapter and a cellphone).
- Entrar no modo de emparelhamento: With the headset off, press and hold the Power button for approximately 5-7 seconds until the LED indicator flashes rapidly (e.g., alternating red and blue).
- Pair with First Device: On your first device (e.g., PrymeBLU radio adapter, cellphone, or tablet), enable Bluetooth and search for available devices. Select "BTH-900-MAX" from the list.
- Confirmar conexão: Once paired, the LED indicator on the headset will change (e.g., slow blue flashes) to indicate a successful connection.
- Pair with Second Device (Dual Link): To connect a second device, repeat step 1 to enter pairing mode again. Then, on your second device, enable Bluetooth and select "BTH-900-MAX". The headset will attempt to connect to both devices.
- Ensure both devices show "BTH-900-MAX" as connected in their Bluetooth settings.
3. Operação
3.1 Utilizando o fone de ouvido
The BTH-900-MAX features a behind-the-head racing style design for a secure and comfortable fit. Adjust the headband and earcups for optimal comfort and noise isolation.

Figure 5: The BTH-900-MAX headset positioned on a mannequin head, illustrating the behind-the-head wearing style.
3.2 controles acimaview
The headset features dedicated control buttons for various functions. Familiarize yourself with their placement and operation.

Figura 6: Visão de cima para baixo view of the headset's control panel, showing the layout of buttons for various functions.

Figura 7: Um close-up view of the side control buttons on the headset, including volume and call controls.
3.3 Radio Communication (PTT)
When connected to a compatible two-way radio via a PrymeBLU adapter or built-in Bluetooth:
- Press and hold the dedicated PTT button on the headset to transmit.
- Solte o botão PTT para ouvir.
3.4 Cellphone/Tablet Communication
When connected to a cellphone or tablet:
- Atender/encerrar chamada: Press the dedicated Call button (usually marked with a phone icon) to answer an incoming call or end an active call.
- Assistente de voz: Long press the Call button to activate your device's voice assistant (e.g., Siri, Google Assistant).
- Controle de volume: Use the Volume Up (+) and Volume Down (-) buttons to adjust audio levels.

Figura 8: Um example of a Push-to-Talk (PTT) application on a smartphone, demonstrating compatibility for mobile communication.
3.5 Ajuste do Microfone
The boom microphone is flexible and can be adjusted for optimal voice pickup. Position it approximately 1-2 inches from your mouth.

Figura 9: Uma análise detalhada view of the noise-reducing condenser boom microphone, including its protective wind sock.
4. Manutenção
4.1 Limpeza
- Limpe as superfícies do fone de ouvido com um pano macio e seco.amp pano. Evite usar produtos químicos agressivos ou produtos de limpeza abrasivos.
- The ear cushions can be gently cleaned with a mild soap solution if necessary. Ensure they are completely dry before reattaching.
- The microphone wind sock can be removed and cleaned or replaced if it becomes worn or dirty.

Figure 10: A close-up of the padded earphone, highlighting the comfortable and replaceable ear cushions.
4.2 Armazenamento
When not in use, store the headset in a cool, dry place. The foldable design allows for compact storage.
- Fold the headset to minimize its footprint.
- Avoid exposing the headset to extreme temperatures or direct sunlight for prolonged periods.
5. Solução De Problemas
Problemas e soluções comuns:
- Sem energia:
- Ensure the headset is fully charged. Connect it to the charger and check the LED indicator.
- Não foi possível emparelhar com o dispositivo:
- Ensure the headset is in pairing mode (rapidly flashing LED).
- Make sure Bluetooth is enabled on your device and it's within the 10-meter range.
- Try turning off and on both the headset and your device's Bluetooth.
- If previously paired, try "forgetting" the device on your phone/radio and re-pairing.
- Poor Audio Quality / No Sound:
- Verifique os níveis de volume tanto no fone de ouvido quanto no dispositivo conectado.
- Ensure the microphone boom is correctly positioned and the wind sock is clean.
- Verify that the headset is properly connected via Bluetooth.
- Move closer to the connected device to ensure you are within the 10-meter Bluetooth range.
- Dual Link Issues:
- Ensure both devices are successfully paired and show as connected.
- Some devices may prioritize one connection over another. Test functionality with each device individually first.
6. Especificações
| Nome do modelo: | BTH-900-MAX |
| Tecnologia de conectividade: | Wireless (Bluetooth) |
| Faixa Bluetooth: | 10 metros |
| Duração da bateria: | 50 horas |
| Tipo de Bateria: | 1 polímero de lítio (incluído) |
| Tipo de controle: | Volume Control, Push Button (PTT) |
| Características especiais: | Foldable, Lightweight, Noise Cancellation, Water Resistant, iOS Phone Control |
| Colocação da orelha: | Sobre a orelha |
| Fator de forma: | Sobre a orelha |
| Controle de ruído: | Cancelamento de ruído ativo |
| Peso do item: | 14.4 onças (0.9 libras) |
| Dimensões do produto: | 9.45 x 6.3 x 9.06 polegadas |
| Componentes incluídos: | Almofadas de ouvido |
| Código UPC: | 638615134348 |
7. Informações de garantia
Specific warranty details for the PRYME BTH-900-MAX Wireless Dual-Muff Headset are not provided in the product data. Please refer to the manufacturer's official website or the product packaging for comprehensive warranty terms and conditions.
8. Suporte ao cliente
For technical assistance, troubleshooting beyond this manual, or inquiries regarding your PRYME BTH-900-MAX headset, please contact PRYME customer support. Contact information can typically be found on the official PRYME website ou dentro da embalagem do produto.
9. Guia em vídeo do produto
Video 1: An official product video demonstrating the PRYME Wireless Dual-Muff Headset with Boom Mic, highlighting its key features and professional applications. (Duration: 1:29)