Type 1: characteristic: -It can be used for hunting, teaching, meeting, tour guide and promotion. -E-388 decoy game loudspeaker amplifier MP3 player -The remote control range is about 400 meters in diameter -Support TF card, USB memory stick, FM -Mini, stylish colors and high quality standard: Color: camouflage Amplifier size (mm): 95 fifty-two 135mm Package weight: 707g Power: 48W Input: 110-240V/AC 50-60Hz Output: DC 10V Charging time: 3-4 hours Service time: 6-8 hours Battery type: lithium ion, 7.4V, 2600mAh Package includes: 1 Aplifier 1 x remote control 1 adapter (depending on your country, a plug adapter should also be included) 1 camouflage bag 1 x belt 1 x User Manual Type 2 characteristic: -Strong, clear, resonant, large capacity lithium battery, which can be used for a long time. -Use USB flash disk and TF card to play MP3. Built in FM radio, electronic organ and remote control. -The double-sided SMD PCB ensures stable performance. Specifications: Model: E-76 Color: camouflage Working life: 6~10 hours Battery: 2200mAh lithium battery Charging voltage: DC 10V Input impedance: 5 Microphone sensitivity: - 53Bbv/108MHz Maximum output power: 38W Frequency response: 40Hz-20kHz Working voltage: 7.4V, 2200mAh rechargeable lithium battery Working temperature: - 10 ~45 Amplifier weight: 440g Scope of application: teaching, tourism, morning exercise, training, sports, outdoor entertainment. Package included: 1 amplifier 1 user manual 1 adapter (with plug adapter) 1x belt 1 remote control 1 camouflage bag Type 3 characteristic: -Strong, clear, resonant, large capacity lithium battery, which can be used for a long time. -Use USB flash disk and TF card to play MP3. Built in FM radio, electronic organ and remote control. -The double-sided SMD PCB ensures stable performance. Specifications: Model: E-898 Color: camouflage Working life: 8~10 hours Battery: 2200mAh lithium battery Charging voltage: DC 10V Input impedance: 5 Microphone sensitivity: - 53Bbv/108MHz Maximum output power: 38W Frequency response: 100Hz-15kHz Working voltage: 7.4V, 2200mAh rechargeable lithium battery Working temperature: - 10 ~45 Amplifier weight: 440g Scope of application: teaching, tourism, morning exercise, training, sports, outdoor entertainment. Package included: 1 amplifier 1 user manual 1 adapter (with plug adapter) 1x belt 1 remote control 1 camouflage bag