This item includes: 1 x Geartist universal cellphone mount (GIFT) Specification: Operating range: 15 meters(MAX), without signal disturbance and no direction limit. Frequency range: 2.403GHZ ~ 2.480GHZ Operational voltage: 3.3V Charge Voltage: 4.4V ~ 5.25V Modulation: GFSK Channel: 78channels TX Power: less than +5dBm Transmission rate: 1M bit/sec Frequency tolerance: +/-30ppm Power consumption: 55mA(on), 1mA(sleep) Battery Type: Built-in lithium-ion battery Item size: 15 * 10 * 2cm Item weight: 107g Package size: 17 * 14.5 * 3.5cm Package weight: 175g Supports System: 1. Windows 2000/xp/7/8/CE 2. Windows vista 3. Linx (Debian 3.1, Redhat - Fedora Ubuntu 8.10-8.10 * 9.0) 4. Android OS (With standard USB interface)