Socket Mobile SocketScan S720 | Bluetooth 1D/2D Barcode Scanner | Apple MFi | Auto Scan Mode | Replaceable AA Battery | Yellow
Overview
The Socket Mobile SocketScan S720 Yellow (CX3978-3035) is the field-replaceable battery variant of the popular S720 Bluetooth 1D/2D barcode scanner. Functionally identical to the Black model, it offers a key operational advantage: instead of a built-in rechargeable Li-Ion pack, it runs on two standard AA-format NiMH batteries (2×2000 mAh, included) that can be swapped in seconds — eliminating downtime caused by charging.
The high-visibility yellow housing makes it easy to locate on a busy checkout counter or in a crowded environment where the scanner might otherwise be misplaced. It reads all popular 1D and 2D barcode types on paper and on mobile screens, pairs instantly with Apple iOS devices (MFi certified), Android, and Windows via Bluetooth 2.1 EDR, and integrates into over 700 applications via Socket Mobile's CaptureSDK.
Yellow vs Black S720: Key Differences
| CX3972-3029 — Black | CX3978-3035 — Yellow (This) | |
| Battery | Built-in Li-Ion rechargeable | 2×AA NiMH replaceable (2000 mAh) |
| Battery swap | Not possible — must charge | Yes — swap batteries in seconds, zero downtime |
| Visibility | Standard | High-visibility Yellow |
| Scanning performance | Identical — same engine, range, symbologies, MFi | |
Key Specifications
| Scanning Technology | 1D/2D LED Imager | 1280×960 sensor | Omnidirectional |
| Symbologies | 1D: Code 128, Code 39, UPC/EAN + 2D: QR Code, DataMatrix, PDF417, Aztec | Printed & on-screen |
| Scan Distance | Up to 380 mm (14.96 in) |
| Wireless | Bluetooth 2.1 + EDR |
| Apple MFi | Yes — certified for iPhone, iPad, iPod Touch |
| OS Compatibility | iOS, Android, Windows, macOS, Linux |
| Battery | 2×AA NiMH replaceable (2000 mAh each) | 16+ hours | Charged via USB cable or replaced instantly |
| Dimensions | 37.1 × 132.2 × 40.1 mm | Weight: 117 g |
| Scan Modes | Trigger + Auto Scan Mode (continuous hands-free scanning) |
| User Indicators | LED (battery, Bluetooth, scan status), audible tones, vibration |
| App Integration | 700+ apps via CaptureSDK | HID keyboard emulation (universal) |
| Color | Yellow |
| In the Box | S720 scanner, 2×AA NiMH batteries (2000 mAh), USB charging cable, wrist strap |
| Warranty | 1-year standard | Extended warranty options available |
| Part Number | CX3978-3035 |
| EAN | 0758497121677 |
Use Cases
High-Throughput Retail & Shared Scanners: When multiple staff use the same scanner across shifts, the replaceable AA battery eliminates queuing at the charging station — drop in fresh batteries and hand it to the next user immediately.
Environments Without Reliable Power Access: Pop-up shops, outdoor events, market stalls, and mobile sales operations can carry spare AA batteries rather than relying on a power outlet for charging.
High-Visibility Tracking: The yellow housing makes this scanner immediately visible on a counter or shelf — reducing loss and making it easy to locate at busy service points.
iOS Mobile POS: Apple MFi certified for native integration with iPhone and iPad POS systems. Reads QR codes, digital coupons, and mobile loyalty cards from screens.
Frequently Asked Questions
Can I use standard alkaline AA batteries instead of NiMH?
Socket Mobile recommends NiMH AA batteries for optimal performance and charging via USB cable. Standard alkaline AA batteries can be used as a temporary measure but cannot be recharged via the USB cable and may provide shorter run time. Always carry spare NiMH batteries (Socket Mobile part AC4158-1955) for maximum productivity.
Is the Yellow S720 compatible with the same apps as the Black S720?
Yes, completely. Both models use the same scanning engine, Bluetooth protocol, and CaptureSDK integration. Any application that supports the CX3972-3029 (Black) will work identically with the CX3978-3035 (Yellow). The only difference is the battery type and housing colour.
How long do the AA NiMH batteries last per charge?
The included 2×AA NiMH batteries (2000 mAh) provide over 16 hours of active scanning — equivalent to the Li-Ion Black model. When depleted, you can either recharge them in-scanner via USB cable or swap them instantly for a fresh pair.
Does the S720 Yellow work without pressing the trigger?
Yes. Auto Scan Mode (presentation mode) enables continuous scanning without pressing the trigger — any barcode brought within range is decoded automatically. This is configurable via the Socket Mobile EZ Pair app or CaptureSDK.