Product Features High Configuration: Featuring Android 9.0 OS and a quad-core processor, this device promises stable and reliable performance with easy operation and strong compatibility. Equipped with 2GB RAM and 16GB ROM, it allows smooth multitasking. NFC functionality is supported. Built-in Barcode Scanner: Utilize the high-performance 1D/2D scanning engine for quick and accurate barcode recognition. Supports various barcode types, including reflective, damaged, and digital. Ideal for inventory management, warehouse operations, logistics, and retail environments. Multiple Network Modes: Enjoy seamless connectivity with support for 4G, 3G, 2G, Bluetooth, and WiFi networks. It ensures stable and efficient data transmission, anytime and anywhere, without geographical limitations. Long Endurance & Durable: With a built-in 3750mAh Li-ion polymer battery and a low-consumption processor, this device guarantees extended battery life and uninterrupted work sessions. Made from high-quality ABS and PC materials for durability and longevity. Ergonomic Design: Features a 4-inch color screen and a full digital keyboard for a comfortable one-handed operation. The ergonomic scanning angle reduces wrist movement and fatigue. Comes with a 5-megapixel rear camera with autofocus for quick code identification. Modular Design: Customize and expand the device to meet the unique needs of various industries. Supports secondary software and hardware development for comprehensive user customization. Specifications Model: 3503M Dimensions: 170 x 70 x 40mm (L x W x H) Weight: 270g Display: 4.0 inch IPS, 800 x 480 Operating System: Android 9.0 SDK: ZKC SDK Development Language: JAVA Touchscreen: Capacitive Battery: Built-in non-removable Li-ion polymer, 3.7V, 3750mAh Battery Charging Time: Approx. 150 minutes Battery Standby: About 14 hours of continuous video playback Ports: Serial port, GPIO, I2C, USB Type-C, etc. Card Slot: 1 SIM card, 1 TF card, Max 128GB Adapter: DC 5V, 3A or quick charge adapter Temperature & Humidity: -10℃ to 50℃, 0 to 95% RH Audio: Receiver, speaker, mic, vibrator Video: Decode 1080p@30fps H.264/H.265; encode 1080p@30fps H.264 CPU: MTK MT6739, ARM Cortex-A53, Quad-core, 1.3 GHz Memory: 2GB RAM, 16GB ROM Network: 4G (LTE-FDD B1/3/5/8, LTE-TDD B38/39/40/41), 3G (WCDMA B1/2/5/8, TD-SCDMA B34/39), 2G (GSM B2/3/5/8) Barcode Scanner Module: 2D image module 1D Barcode Support: UPC/EAN, Code128, GS1-128, Code 39, and more 2D Barcode Support: PDF417, Data Matrix, QR Code, Aztec, and more Rear Camera: 5.0 MP auto focus Flashlight: Rear single LED Packing List 1 x Device 1 x USB Type-C Data Cable 1 x Adapter