Description: Using large-capacity battery, this wireless transmitter features long standby time. This wireless transmitter is plug play, which is easy and convenient to use. The Bluetooth-compatible5.1 technology of this wireless transmitter supports fast and low-latency signal transmission as well as lossless and HiFi sound effect. It is constructed of ABS material. Supporting HD-compatible calling, Bluetooth-compatible reception and transmission, this wireless transmitter is multifunctional. The length of this product is 6.6cm, width is 2cm and thickness is 1.2cm. This wireless transmitter is suitable for being used in laptop, loudspeaker, smartphone, computer and so on. Item Name: Wireless Transmitter Material: ABS Bluetooth-compatible Version: 5.1 Supported Protocols: RX: A2DP AVRC, TX: A2DP Working Frequency Band: 2.402GHz -2.480GHz Transmission Rate: 2.4GHz Interface Type: Input: 3.5mm Interface/Output: 3.5mm Interface Built-in Battery: 150mAh(Included) Charging Time: about 2H Battery life: RX about 8H, TX about 5H Bluetooth-compatible Distance: 10-15m (Open Space) Charging Method: Type-C DC 5V Features: Driver-free, Quick Transmission, Stable Output Size Details: 6.6cm x 2cm x 1.2cm/2.6" x 0.79" x 0.47" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wireless Transmitter 1 x USB Charging Cable 1 x User Manual