🔈HIGHLIGHTS🔈 🔖 Bluetooth 4.0 – Applies advanced Bluetooth 4.0 with low energy 🔖 Driver Free – Plug and Play for Win 8, Win 8.1, and Win 10 🔖 Nano-Sized – Ultra-small for convenient portability with reliable high performance 🔖 Supported Operating System – Supports Windows 10/8.1/8/7/XP ✒️SPECIFICATIONS✒️ 🐱‍🏍Interface: USB 2.0 🐱‍🏍Dimensions ( W x D x H ): 0.58 × 0.27 × 0.74 in (14.8 × 6.8 × 18.9 mm) 🐱‍🏍Standards and Protocols: Bluetooth 4.0 🐱‍🏍Modulation Technology: DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM 🐱‍🏍System Requirements: Windows 10/8.1/8/7/XP 🐱‍🏍Regulatory Certification: CE 📦 WHAT'S IN THE BOX 📦 1 Bluetooth 4.0 Nano USB Adapter UB4A 1 Quick Installation Guide 📌 WARRANTY INFORMATION / RETURN / REPLACEMENT / REFUND📌 ✔️3 years warranty ✔️based on the S/N (serial number) or the purchase invoice date ✔️No Wanranty-Product is physical damaged, watered, burned, or other manmade damaged ✔️No Wanranty-Model is opened, or serial number, missing, or parts of the model missing 📷Kindly take a photo of the item and provide the order number to our customer service agent for further details