The moisture meter can quickly measure the moisture content of the grain. 1. Loud sound: The radio player has a volume at a square level, rocking the house. Using diaphragm tube, 3W power, volume over 120 decibels. 2. Long battery life: This multimedia music player is built with a high capacity 1000mah lithium battery. Improved battery life. 3. Stable transmission: wireless bluetooth connection, wide range of stable transmission. Bluetooth version 5.0, stable connection range up to 10 m/32,8 feet. 4. Multifunctional: CD player supports memory card playback, supports full bandwidth transmission reception, supports NOAA weather forecast. 5. Compact size: Radio digital is small, flexible and portable. It is easy to take with you on the go. Specification: Item Type: Music Player Material: ABS Scope of reception: MW: 522-1620 KHZ (average wave rate 9 KHZ) 520-1710 KHz (average wave step value 10 KHZ) FM: 87-108 MHZ SW: 5.70-17.90 MHZ WB: 162.400-162.550 MHZ Sensitivity of reception: FM:≤8dB MW≤86dB SW≤32dB Resting Current: ≤60uA Maximum current: ≤650MA Speaker: 4Ω/3W SNR: FM: ≥40dB MW:≥30dB SW > 40dB Bluetooth version: VER 5.0 Bluetooth reception distance: ≤10 m/32,8 feet Minimum operating voltage: 3,4 V External input voltage: DC: DC5V Built-in lithium battery: BL5C lithium battery: 3,7V 1000mAh (included) List of packages: 1 x Music Player 1 x Lifting Rope 1 x Charging Line 1 x description Turn on the power so you can use the FM radio.