Product descriptions from the supplier
V81 Fashion 8G Memory Waterproof Voice Recording Men Women Digital Wrist Watch Voice Recorder








| Recording Format | WAV/MP3 | ||
| Music Play Format | MP3,WMA,FLAC,APE,OGG lossless music | ||
| Recording Quality | Recording Saving Time(8GB) | Recording Saving Time(16GB) | |
| WAV Recording Format | 1536kbps | 12 hours | 24Â hours |
| 512kbps | 36Â hours | 72Â hours | |
| 256kbps | 72Â hours | 144Â hours | |
| MP3 Recording Format | 128kbps | 145Â hours | 290Â hours |
| 64kbps | 290Â hours | 580Â hours | |
| 32kbps | 580Â hours | 1160Â hours | |
| Battery Recording Time | About 35 hours | ||
| Battery Play Time | About 15 hours | ||
| Battery Capacity | 300MAÂ Â lithium battery | ||
| LCD Resolution | OLED Cold Screen 96*64 | ||
| USB | USB 2.0Â High Speed | ||
| Weight(g) | 30g | ||
| Working Temperature | About 0 to 40 ℃ | ||
| Recording Sample Rate | 48KHZ | ||
| Size(mm) | 40.8mm×33mm×10mm(L×W×T) | ||
| Compatible System | Windows 2000&above | ||
Ø  ABS material, anti-fall strongly
Ø  Professional pen chip of ATJ2127,HD lossless linear recording
Ø  English/Chinese/Russian/Korean/Japanese(24 languages)
Ø  Timestamp,Name the recording files by date automatically
Ø  Power on automatically and record timingly by setting time
Ø  AGC fuction, adjusts the noise source automatically
Ø  Monitor the recording in real time/Hearing aid fuction
Ø  Starting up with password to protect the files
Ø  Support checking the remaining recording time
Ø  Built-in high-fidelity speaker , listen with headphones
Ø  Eyefree,OLED cold light screen
Ø  VOR voice recording function
Ø  Detect low battery and save recording files automatically
Ø  Start to record by one press, support voice recording and monitoring recording
Ø  Bulit in Lithium battery,rechargable
Ø  USB 2.0 connector ,easy to upload and download files
Ø  Color: Black

$23.50 $30.00
V81 Fashion 8G Memory Waterproof Voice Recording Men Women Digital Wrist Watch Voice Recorder









System Type:
UHF Wireless In-Ear Monitor System
Professional Audio Monitoring for Stage & Studio Use
Transmitter:
Frequency Range: 500–980 MHz (varies by region)
RF Output Power: ≤ 10mW
Audio Input: 6.35mm (1/4″) mono/stereo jack
Power Supply: DC 12V adapter
Display: LED screen (channel, frequency, volume)
Receiver (Bodypack):
Frequency Range: 500–980 MHz
Signal-to-Noise Ratio: ≥ 105dB
Audio Output: 3.5mm stereo jack
Battery: 2 x AA batteries (not included)
Operating Time: Approx. 6–8 hours
Display: LED (frequency, battery level)
In-Ear Headphones:
Type: Dynamic driver in-ear monitors
Frequency Response: 20Hz – 20kHz
Impedance: 16Ω
Sensitivity: 110dB ± 3dB
Connector: 3.5mm stereo plug
Cable Length: ~1.2m
Wireless Performance:
Operating Range: Up to 100 meters (328 feet) in open space
Channels: Multiple selectable channels to avoid interference
Modulation: FM (Frequency Modulation)
Latency: Low-latency signal transmission


This supplier mainly exports to the United States, France, and Suriname, offering overseas warehouse services. They have a high positive review rate of 90.3% and 241 positive reviews.




|
Model |
ZMK310U2 |
| Optical Parameter | |
| Sensor | 1/2.8″ CMOS |
| Effective Pixels | 16:9Â 2.1Â Megapixels |
| Video Format | USB2.0:Â 1080p30,720p30,
640X480p30, 320X240p30,
|
| Optical Lens | 10X,F1.6~F3.5,f=4.7mm~47mm |
| Horizontal View Angle | 10X,55°(wide-angle)~5.8°(distal) |
| Minimum illumination | 0.1Lux |
| White Balance | Auto/indoor/outdoor/Manual |
| Focus | Auto/Manual |
| Noise-Signal Ratio | >50dB |
| Input/Output interface | |
| HD video interface | USB 2.0 |
| Control signal interface | 8 mini DIN(RS232)/3.81 pin(RS485) |
| Control signal format | Start bit:1bit,data bit:8bit,stop bit:1bit,baud rate:9600/4800/2400bps |
| Power interface | HEC3800 power socket |
| Support operating system | Windows 7, Windows 10,  Linux |
| USB protocol | UVC1.1 |
| Encoding | MPEG/YUY2 |
| USB interface PTZ control | USB interface PTZ control |
| Mechanical Parameter | |
| Pan-Tilt | Horizontal Angle: ±170°(Max speed: 100° /s); |
| Vertical Angle: -30° to +90°(Max speed: 60° /s) | |
| Preset accuracy:±0.1° | |
| No. of Preset Positions:255 | |
| Colour | Steel gray |
| Power adapter | AC110V-AC220V switch DC12V/2A |
| Input voltage | DC12V(DC11.5-DC12.5V) |
| Power dissipation | 12W(Max) |
| Storage Temperature | -10℃~+60℃ |
| Working Temperature | 0℃~45℃ |
| Dimensions | (Length)155 × (Width)176 x (Height)170mm |
| Weight(Net weight) | 2.5KG(1.3KG) |
| Environment | Indoor |
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