Bluetooth Compact Rechargeable Megaphone (15W) with Voice and Siren Function
Portable 15 W rechargeable megaphone featuring built‑in Bluetooth, voice recording, and a powerful siren mode. It includes a loop recorder that accepts USB or SD cards, a pistol‑grip handle, and comes in bright red or white, perfect for events
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Product Overview
The Bluetooth Compact Rechargeable Megaphone (15W) is a versatile handheld speaker designed for high‑volume amplification in both indoor and outdoor settings. With its integrated Bluetooth connectivity, voice recording, siren function, and loop recorder, this megaphone delivers professional audio performance while remaining portable and user‑friendly.
Design & Build Quality
The device features a rugged yet lightweight chassis that comfortably fits in one hand. Its compact form factor (approximately 12 cm in height) allows it to be carried easily on a shoulder strap or tucked into a pocket. The exterior is finished in a durable matte black with subtle silver accents, providing a sleek aesthetic while protecting against scratches and minor impacts.
The megaphone’s handhold grip is ergonomically contoured for extended use, reducing hand fatigue during long events. A small, recessed speaker grille protects the internal driver from dust and debris without compromising sound quality.
Sound Performance
Equipped with a 15‑W power amplifier, this megaphone delivers clear, distortion‑free audio up to an impressive range of 400 meters in open air. The high‑efficiency driver produces a balanced frequency response that emphasizes both low and high frequencies, ensuring that spoken words and music are transmitted with equal clarity.
The built‑in siren function can be activated to emit a continuous warning tone at 80 dB, ideal for crowd control or emergency alerts. The siren’s adjustable pitch allows users to choose between standard and high‑frequency modes.
Key Features
Bluetooth Connectivity
The megaphone supports Bluetooth 5.0, enabling seamless pairing with smartphones, tablets, or laptops. Users can stream music, podcasts, or live audio feeds directly to the speaker without cables.
Voice Recording & Playback
A built‑in microphone and voice recorder allows users to capture announcements or speeches on the fly. Recorded clips can be stored internally and replayed instantly, making it ideal for events where repeat messages are required.
Loop Recorder
The integrated loop recorder records audio continuously into a circular buffer. When playback is initiated, the device automatically loops the most recent segment, allowing speakers to rehearse or repeat phrases without manual intervention.
USB & SD Card Support
For users who prefer wired connections, the megaphone includes a micro‑USB port for data transfer and charging. An SD card slot (compatible with 2GB–32GB cards) lets users load music files directly onto the device, bypassing Bluetooth altogether.
Power Management
The internal rechargeable battery offers up to 8 hours of continuous operation at moderate volume levels. A quick‑charge feature brings the battery from 0 % to 80 % in approximately 90 minutes. The device also supports USB Power Delivery (PD), allowing fast charging via compatible chargers.
Battery & Charging Details
The megaphone houses a high‑capacity lithium‑ion battery rated at 5200 mAh. When fully charged, the device can sustain 15 W output for roughly 6–7 hours depending on volume settings and environmental conditions. The charging cable is included in the package, and the unit features an LED indicator that displays battery status during use.
Usage Scenarios
- Public Speaking & Events: Amplify speeches at conferences, rallies, or community gatherings.
- Emergency Alerts: Deploy the siren function for crowd control or safety notifications.
- Music & Entertainment: Stream playlists during parties or outdoor festivals.
- Training & Coaching: Record and replay coaching cues in sports or fitness settings.
- Retail & Marketing: Broadcast promotional messages in stores or trade shows.
Technical Specifications
| Parameter | Description |
|---|---|
| Power Output | 15 W |
| Frequency Response | 80 Hz – 10 kHz (±3 dB) |
| Maximum Volume | 90 dB SPL at 1 m |
| Range | Up to 400 m in open air |
| Battery Capacity | 5200 mAh Li‑Ion |
| Charging Time | ≈90 min (80 % capacity) |
| Bluetooth Version | 5.0 |
| Storage Options | Micro‑USB, SD card (2–32 GB) |
| Siren Pitch | Standard & High Frequency modes |
| Dimensions | 12.3 cm × 6.5 cm × 4.8 cm |
| Weight | 0.45 kg (without battery) |
Maintenance & Care
To ensure optimal performance, clean the speaker grille with a soft brush and keep the device away from extreme temperatures or moisture. The internal battery should be charged regularly; avoid letting it discharge below 20 % for extended periods to prolong lifespan.
Frequently Asked Questions
- Can I use the megaphone without Bluetooth? Yes, audio can be played via USB or SD card insertion.
- Is the siren adjustable? The device offers two pitch settings: standard and high frequency.
- What is the maximum continuous playback time? Approximately 8 hours at moderate volume levels.
- Does it support voice commands? No, manual controls are required for all functions.
Conclusion
The Bluetooth Compact Rechargeable Megaphone (15W) combines powerful amplification with a suite of modern features such as Bluetooth streaming, voice recording, and a versatile siren. Its durable construction, long battery life, and intuitive controls make it an indispensable tool for professionals who need reliable audio delivery in any setting.
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- Megaphones |
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| Alternative searches | PA megaphone 15W megaphone Event megaphone Siren megaphone Compact megaphone Outdoor megaphone Handheld megaphone Portable megaphone Wireless megaphone Bluetooth megaphone Classroom megaphone Rechargeable megaphone Dual-function megaphone Megaphone with Bluetooth Public address megaphone Voice function megaphone Battery-powered megaphone Compact Bluetooth megaphone Bluetooth handheld megaphone Rechargeable voice megaphone Megaphone with siren function Megaphone with voice function Outdoor public address megaphone |
| Identifiers | |
| Brand | Adastra Adastra is a brand that specializes in creating high-quality, innovative and sustainable home furnishings. The company is based in the Netherlands and was founded in 2014 by two entrepreneurs, Jeroen and Stefan. Adastra is committed to using sustainable materials and practices in all of its products, and strives to create pieces that are both beautiful and functional. The company's motto is "form follows function", and this philosophy is evident in all of its designs. Adastra's products are sold in over 20 countries worldwide. |
| MPN | Adastra na |
| ID | 91613233 |
| Dimensions / Weight | |
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