Discontinued products STONE 40A-L V2.0 Voltage: 4~6S Weight: 32.2g (including cable) Size: 51*47.5mm STONE 40A-M V2.0 Voltage: 6~14S Weight: 32.2g (including cable) Size: 51*47.5mm STONE 40A-M V1.0 Voltage: 6~14S Weight: 34.4g (including cable) Size: 51.7*24.7mm STONE 40A-L V1.0 Voltage: 4~6S Weight: 34.4g (including cable) Size: 51.7*24.7mm ROCK 220A-MA Voltage: 6~14S Weight: 345g (including cables) Size: 128*56*38mm