Features: * Omnidirectional pickup, digital FSK transmission. The built-in miniature microphone can receive sound from all aspects in equal amount, which is suitable for multi-person shooting such as interviews and Vlogs. * True color LED display. Both transmitter and receiver are equipped with LED display, signal condition mode status, bluetooth connection status, battery level, etc. are instantly visible. * Strong compatibility. Compatible with 99% of devices, it can be used for cameras, mobile phones, video cameras, computers, sound cards, voice recorders, mixers and other devices. * Small size, the size is only 44*12*50mm. A single volume is smaller than a matchbox, and it is portable when going out to shoot. Specification: Transmission frequency band: 2400Mhz-2438.5Mhz Audio frequency response: 100Hz-16KHz±3db Dynamic range: 87db (circuit performance) Peak input sound card: 97dB SPL (built-in microphone) Pairing method: automatic Signal-to-noise ratio: 85db (circuit performance) Size: 44*12*50mm Colour: Black Receiver: Transmission frequency band: 2400Mhz-2438.5Mhz Transmission Type: Frequency Hopping/Digital FSK Acceptance Sensitivity: -86db Battery type: lithium battery Charging interface: USB 5V Use time: about 8 hours Output interface: 3.5mm TRS Transmitter: Transmission frequency band: 2400Mhz-2438.5Mhz Transmission Type: Frequency Hopping/Digital FSK Acceptance Sensitivity: -86db Battery type: lithium battery Charging interface: USB 5V Use time: about 5 hours Output interface: 3.5mm TRS Packing included: 1 * Receiver 1 * Transmitter 1 * Type-C mobile phone cable 1 * Camera cable 1 * Mobile phone cable 1 * 2 in 1 charging cable 1 * Instruction Manual Note: 1. Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.