What is the minimum memory card size?

It requires a memory card of at least 8GB capacity.

How do I adjust the volume?

Volume adjustment and track switching are done via the scroll wheel.

K2 Card Digital Voice Recorder Activated Professional Sound Record 150 Hours

Name: K2 Card Digital Voice Recorder Activated Professional Sound Record 150 Hours
Brand: Shenzhen Slinya Electronic Co., Ltd.
SKU: 2282479115

Guangdong, ChinaShenzhen Slinya Electronic Co., Ltd.

US$21.55

10-99 Pieces

US$20.55

100-999 Pieces

US$18.55

1,000-999,999 Pieces

US$10.55

1,000,000+ Pieces

Sample price:US$25.00/piece.Request sample

Product profile

Customization

Available

Record Capacity

≥8GB

Type

USB

Model NO.

DR03

Multiple Audio Format

WAV

Sampling Precision

16 Bit

Sampling Frequency

48khz

Display

LCD

Memory Card Type

MiniSD

Transport Package

Color Box

Specification

86*54*4mm

Trademark

OEM

Origin

Shenzhen, China

Production Capacity

50000 PCS/Month

Key features

150 Hours Recording Time: Provides up to 150 hours of continuous recording capacity.

Voice Activated Recording: Features independent voice-activated buttons with 50Ddb sensitivity.

Loop Coverage Recording: Supports automatic split recording and loop coverage for continuous use.

Multiple Audio Formats: Supports MP3, WMA, and WAV playback with ADPCM recording at 192Kbit.

Timestamp File Naming: Automatically names recording files based on the recording time.

LCD Display: Equipped with an LCD screen for easy viewing of recording status.

Scroll Wheel Volume: Includes a scroll wheel for volume adjustment and track switching.

Fast Forward Playback: Supports fast forward and reverse playback for efficient review.

Company profile

Shenzhen Slinya Electronic Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2008-05-01 CertifiedNearest Port: Shenzhen Port, Ningbo PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, CIP, FCA, EXW

AI-Powered supplier vetting

SummaryShenzhen Slinya Electronic Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory, with operations in Shenzhen, Guangdong. It has reportedly operated for 13 years and has exported since 2008, with 71%–90% of sales from exports. The supplier offers electronic products and accessories, lighting, cameras, electrical supplies, and related categories. Its stated capabilities include 10 production lines, 6–10 R&D engineers, 6–10 quality-control staff, advanced production equipment, and precision testing equipment. It lists multiple management-system certifications, although the provided information does not include certificate numbers, validity dates, or verification evidence. The supplier claims international distribution and long-term customer cooperation, but no named customer cases are provided. Financial strength, customization capability, and after-sales performance cannot be conclusively assessed from the available slices.

Supplier typeThe supplier is explicitly identified as both a trading company and manufacturer/factory, with a factory location in Shenzhen and a product portfolio centered on electronics and accessories. This indicates a combined manufacturing and trading business model rather than a purely intermediary profile.

CertificationsThe supplier lists BSCI, OHSAS/OHSMS 18001, TS 16949, ISO 14001, ISO 9001, ISO 14000, ISO 20000, SA 8000, QC 080000, and ISO 14064 as supplier-management-system certifications. However, the slices provide no certificate identifiers, issuing bodies, scope, or validity dates, so the certifications are reported but not independently verifiable here.

R&D capabilitySlinya reports strong development capability, advanced production equipment, and 6–10 R&D engineers. These details indicate an established technical-development function, although no specific patents, new-product launch record, proprietary technologies, or documented R&D achievements are supplied.

Production capacityThe supplier reports a factory in Shenzhen, 10 production lines, 6–10 quality-control staff, advanced equipment, precision testing equipment, and experienced technicians and workers. Together, these details provide explicit evidence of organized manufacturing and quality-control resources.