Features: 100% Brand new and high quality! This small size Bluetooth 4.0 TTL transceiver module allows your target device communicate with yourFor iPhone/ For iPAD IOS 6 or Android 4.3 above devices. It's easy to use and completely encapsulated. You can set it as slave or master. You can use AT command set the baudrate. Specifications: Ultra-low standby power consumption 90uA~400uA Coverage up to 60 meters Built in PCB antenna Power input: 3.6V-6V DC(Can not higher than 6V) Size: 43mm x 15mm Color: Blue Net Weight: 4g Package includes: 1 x 4.0 Bluetooth Serial Module